I slept with my H until he moved out. I used protection. For me, it was what I did. I enjoy it, and it wasn't causing me emotion turmoil until it was. Then, I stopped and just said to my H that I'm not in an open marriage.
It's for each individual to decide. My H and I went out on a date saturday night and it was hard for me at one point to hold off. I'm pretty high drive normal, but preggo I'm super charged...hehehe. But I held back, and surprisingly he didn't try it. He kept trying for the first 2 months of separation until I went NC.
Bottom line, the main person to focus on what it means...is you. If it's going to mess you up, don't do it. If you have an expecation attached, don't do it!
Use protection if you do!! My H was totally understanding when I was like "I'm cool with sex, but you need to wrap it up bud." I thought he'd be offended, but I mean, hello?! No elephant in this room.
M: 9 yrs T: 13 yrs H:34 Me:35, S4, D2, S 7 months Dday 11/12-PA & multiple PAs Dbing 12/12 S 1/13 7/13 H moved back in basement. 8/13 #3 born 10/13 still cheating 10/13 He moves across country, I file for D