I have posted about it before, my wife Mary worked part time at a massage parlor (yes THAT kind). Mostly just hand jobs. She would of course undress for the right tips (from being in bra and panties to topless to full nude). Letting guys touch. For most part they did not offer "full service" but it did happen.
In addition to hand jobs, Mary progressed to giving head (mostly just to trusted regulars but sometimes others). And yeah she eventually fucked a few.