1. Kosher Adultery: Seduce and Sin With Your Spouse by Shmuley Boteach

2. His Needs, Her Needs: Building an Affair-Proof Marriage by Willard F. Harley

3. The Proper Care and Feeding of Husbands by Laura Schlessinger

as civie ones, IMHO (Maybe more so!)

In any case, to answer the question, the important element is never taking the person or relationship for granted.  That's were the boredom creeps in.

Be active, always explore new ground, don't be afraid to ask or reveal what's going on inside of you.

This way relationships of all kinds stay fresh and interesting.

I say, good question!

In your opinion, what are some key factors that make a relationship  last? Because even after a few years in a relationship sometimes it gets boring. Is it compatibility?

You do realize that this is a board about p4p, right?

you are not trying new things, or working on making it better or both partners are not on the same page as to what makes them happy..  It is like a job, if you do the same thing time after time it becomes routine, then boring, then you are looking for something else.  Put as much effort in as you did in the beginning and see what happens.  Some times it is time for a change, as some things just do not last.

Are we taking with a provider or your SO? My answer will very based on which you are referring to.

Just how many different aliases do you have?

To the OP: relationship with a provider mostly last as long as Benjamins grace the envelop marked, "gift"

Of course, respect and decency play a very important part to establish a relationship, but ultimately it is a business and The Benjamins are really the key factor. Apologies in advance for addressing you as "stupid", but just wanted to pique your attention

In the civvie realm: the key factor is "trust"

50. That's why I pay for VIP. LOL

Having listened to Laura Schlessinger's show, when she still had one, I HIGHLY doubt that book would be useful for more than just humor and guy bashing.  It's all she seemed to do!

I am respectful of their time.  If they choose to stay & chat fine but I do not presume to expect anything more.

I am respectful of their choices and boundaries.   If they say, no fingers there, then that is it.

I am clean, I have my prefered soft soap available & am sure my hands are clean.  

I am granted trust...  trust in my person.  We roll on the bed naked, protection is at hand.  I don't try any funny business.
I have the correct donation in my key pocket in a paper clip.  When I undress, there is a chair next to her dresser for my clothes, my pocket junk goes on the dresser.  When I redress, the donation is silently left behind.  In the back & forth of chatting, dressing & bathroom trips...  often the donation will silently disappear.  I don't "watch" the donation.  This extends the GFE illusion.  Trust I'll make the proper donation.  

In between meetings, I do not pester them.  An occasional email if I find something to be of interest to them.  I neither expect nor demand a reply, so am never disappointed.  

It is easy to FALL FOR a provider you have great sex with...  I keep my perspective...  
In truth I am "friends" with these Favorite Ladies...

Respect, Communication, and the same apetite for sex... Go hand in hand....

Needs and wants are a major question to take in consideration.

On her show. Dr. Laura was in insufferable effing hypocritical moralist. And she didn't just bash men -- she bashed practically everyone who didn't adhere to her interpretation of very strict Orthodox Jewish values which also pretty much match strict Catholic values in many respects.

Nevertheless, her book naturally being oriented toward married people -- and targeted to wives in particular -- she does a very good job of showing women the zillion things they do wrong in dealing with their husbands but their husbands will never tell them.

Let's be honest. Though there are some good women out there, your typical wife is entitled as hell, walks around constantly feeling righteously aggrieved over both real slights and not-so-real failings of her husband, gives him zilch information that he can use to meet her needs in any form that he can understand, takes her husband for granted and quickly turns sex into a twice-a-year thing that is yielded so grudgingly a husband feels sex with his wife might be borderline rape. She furthermore fails to take care of herself and seems to go out of her way to be as unappealing as possible. At least, until the divorce when she will temporarily shape up again.

And then when he strays -- and, of course, ideally he shouldn't because a promise still applies even if he is being treated like shit -- she is shocked and hurt -- and then turns into a screaming banshee wanting blood. Never acknowledging, of course, that she broke a great many implicit promises along the way well before he strayed in most cases.

What Dr. Laura's book explains is important stuff. She explains how to communicate with men so that they have the tools available to meet their wives' needs. Nothing is more frustrating to a man than the feeling of utter impotence at meeting his wife's needs. He wants to be her knight in shining armor -- and Dr. Laura explains to women how to facilitate that.

She explains to women how important it is for them to actually have sex with their husbands -- REAL sex, like they mean it. How important it is to look nice, express appreciation, and not take their husbands for granted. She makes sure women have an understanding of THEIR vows, and how them upholding their end of the agreement helps men uphold theirs.

Now, Dr, Laura is even more ponderously pedantic than me in some respects, and a hypocrite to boot. She really looks down on people a lot. And so, there are some areas where she clearly doesn't think highly of men. She acts like men are in some respects no better than puppy dogs. I'll have her know that if it weren't for us puppy dogs, radio and the printing press wouldn't freakin; exist.

But in spite of its flaws, I think this is actually a very good book.

Our educational system puts a lot of emphasis on sex education -- more than is needed, imho. But it puts ZERO emphasis on relationship education, leaving people to learn as they go.

I think books like those I recommended have importance in educating people to make the most out of relationships as we model them in the current era. Are they a panacea? No. Because they mainly deal with humans as infinitely plastic entities entirely formed by nurture; and they dispense with too much of the biology.

But in practice these books contain practical and actionable data. It isn't 100% -- but it is 60% which is better than most of us have to start with.

What if OTC was involved? Or going way over the clock? Her choice, even insisted on it.

And it's cool to call each other up. Text during the day because one or the other is bored with work or just wanted to say 'hi!'

Speaking hypothetically, of course. But if either of you were in the situation, would you believe you had a great 'relationship' with a provider and just go with the flow?

Yeah, we all know it's P4P. That's besides the point. Providers and hobbyists are people first and foremost.

So maybe they think there's something about your ass that they feel compelled to call you out of the blue. Would that hurt your feelings and disrupt your sense of the game?

Would it be so unfathomable is a better question, if that is even a word.

OTC time from a sex worker is the ultimate form of flattery and truly a reward for your good behavior and decency. It would not hurt my feeling one bit to interact with someone who I've met through this channel as friends in the manner which you have described, as long as there is going to be "Pay when we Play" If there is no more envelop involved when playing with a provider, that would disturb my sense of the game. Been there, done that and did not like the outcome.