In early Dec. I broke it off with SB I really enjoyed being with and we had great chemistry. She did have a couple issues I didn't want to deal with but she also was moving to GF type arrangement and I have zero interest in that, so I just nicely cut it off.

However, she still texts me and says how much she misses me, last time was 2:35am last night, she even sent pic of her from party. I know have SB only interested in meets and money, no dating, texts, calls or any contact until I text her for a meet. I much prefer this way.

I am a little different than the average guy here in so much as I don't really mind getting into a "real" relationship every once in a while, whether it be with a hooker, SB, or civvie. I am very happily divorced, but I don't mind being in a relationship for a short while at least. My only problem is staying in a relationship, not getting into one. I seem to have a rather short attention span and I seem to grow bored with the same woman after a rather short time.

I have been with a few SB's where there was NEVER any exchange of "sugar", but they are rarity IMO. I have been with many more where the "allowance" was nothing more than a few nice meals and a little pocket money, probably a lot less than I could have expected from a "real" GF,

It was all fine for a few months till one day during cuddle time after great sex she said I love you.  I think it was a slip. That was enough for me.  
I was called for an emergency out of town the next day. Then my ex-wife and I got together because of a mutual loss and pain. I sometimes surprise myself with the stories I come up with.

If I meet girl through SA or with sugar as the main emphasis, my careful nature would naturally compel me to err on the side of caution when an SB wants to move onto the next level even if based on intense chemistry, because the often wide age gap reminds me of the potential trappings.

I am single so I have no problems with other factors which deter like minded SDs and quite frankly, the allowance factor can become monotonous as can the intimacy. I have never GF'ed anyone whom I met from SA and I have been in more than a handful of 3+ months "relationships". I feel that I have reached the end of the road with this last SB after about say 4 months. Truth be told, if they are really, really into you and would like to spend an inordinate amount of time with you, they will bring up the issue of the next level themselves and will most likely suggest that there will be no further requirement for "sugar" from you to her!

and we told each other as much, several times.  But the boundaries were still very much in place.  She had other guys she was seeing, I am married, happily, and not about to change that.  It lasted a full year, one I'll never forget.  I still miss her deeply.