My own philosophy on this is:  If a person feels like they are cheating, then it's cheating.

I guess we have to define cheating first, so maybe let's call it when someone who is in a committed relationship  breaks the trust of his or her partner by having sex with another person.   Here the key word is 'trust' not 'sex' (though it's a close second lol). Thus, since every relationship has parameters, but surely there is no one size fits all rule for those parameters (and likely more so when the partners are a hobbyist and a provider), then when one partner breaches that trust and goes beyond those parameters with another lover, I think we can call that cheating.

Absolutely! Each relationship is a negotiated situation. If it's not discussed, then there is already a problem. And then, what is acceptable at one time can change at another. I'm sure it can get pretty complicated

The safer bet is: If a person feels like they've been cheated on, then it's cheating.  

Then sexual contact outside of her job would be cheating. Pretty simple.

Client leaves $X and a tip of $Y but she tells the SO that she only got the usual $X.  
Client stays longer and leaves $X + $Y but she tells the SO that she was taking a nap.
Client pays extra $Y for extra services but she tells the SO it was business as usual.  

have thought of this angle.  Good point, but it assumes community finances.  I have often had a significant others where we kept our finances separate, both civvie girlfriends and working girlfriends.

If my tall attractive wife is at a conference in Hawaii and she meets someone as charming as Mr. Fisher and had a four day affair which was very satisfying to her.  And if, after this, she comes back home and still loves me and finds me attractive and makes love to me, who lost? Fishr had a great time, my wife did as well, and i have lost nothing, in fact I have a happy wife whose sex drive has been newly perked up.  
I once made the mistake (decades ago and before we were married) of saying this during a discussion with a few other couples and my then girl friend now wife barely talked to me for a few weeks she was so angry. So clearly to me, my wife could have an affair with Mr. Fisher and not b cheating on me and I am clearly cheating every time I see a provider.

I think it depends on the understanding the couple has regarding sex outside of marriage. Cheating would involve going outside of that agreement.

EOM

Cheating to me is when there is an emotional attachment, when you start treating your SO different bc of the girl /client you are seeing.

Are you breaking mutually negotiated boundaries, within an open relationship?  

No hat required,LV, too you who seek the back alleys of the Vegas strip for $50 dollar back seat hookers that fit your world. We/I  know know who you are ,"T"...need I say more?  Google "cheapass" in Vegas and that's you... Sorry that this post is way beyond you allowance/budget and that your pension only allows you to see $100 hookers or less for 15 minutes. We in Vegas know who you are, a predator that seek the old and vulnerable. To belittle anyone asking for $400 or more on the Vegas board...well that's just a class act... So you haggle for $100 for 15 minutes, what a guy....So if I want any shit from you, I'll just squeeze your head.. And come on now, bigger and better have tried to bring me down, "predator"....your new nickname to me...So stalked me all you want..I'm game, just bring your "Big boy pants" T....Yes I think I know who you are...scary isn't it?
Now again, I'm sorry to distract you from the back alleys of Vegas, so carry on..cheapass....lol
And to conclude LV/predator ,your opinion doesn't mean shit.  

Yes,
this would be based on each individual's  
Definition of what "Cheating" is.

That'll learn you to say:  "Take my wife..." the next time we chat.

all of your grammar problems but "you" should definitely be "your."  Your grammar is almost as bad as your judgement, which of course is nonexistent.  There are more than enough at-risk elementary school students in your North Las Vegas neighborhood, who would volunteer to assist you.  Once your writing at least approaches 3rd grade level, some on here will be able to understand your posts.  Please try a little harder you are exposing yourself and it is getting rather embarrassing.

Sex in outside of a marriage while married is only cheating if:

He's right dude (that is if you are a guy).  Weren't you the one who tried to suppress inputs from some of us more reasonable ladies on the Vegas board?  Didn't you also make some lame remark about those who use an alias and then you continue to post with an alias yourself?  Do you even have a clue?  

If you have to lie about it. It's cheating.

But based on your reviews it seems that he might be a regular of yours, so you gotta ask yourself, is the $150 per month for a 30 minute session with this loser worth it? Are times that tough? But then again, you're exactly what he's into, ya know, that mommy fetish thing...lol..So I guess you two deserve each other.
And I never said anything about a Maserati so I don't know where you got that ideal from

You mentioned my reviews?  Perfect!  Why don't we take a look at the reviews you have written.  Have you written any?  Not so bold now, are you?  This is one Latina you won't be able to bully.

If someone lies during a poker game, is that cheating?  (I know it's not recommended, but that's another matter.)

No wonder she's been so perky......The Fish strikes again

he is an asshole.  No need to reply.  Have never seen him (or her) post on he reviewer's only DB so he is either a woman or has no reviews and has not been granted access.

Lying about your hand "before" you show it is one thing, trying to lie about it "after" you've been called is quite another and once upon a time might get you shot.