<human>: So we've been dating for around five months, me 27m, her 31f. She separated from her husband a year and a half ago and they have two children. 4 and 8 years old.

 Our relationship is pretty strong for this length of time, we're very open with one another and I spend lots of time with her and the kids. Actually, we even work together, it's how we met. (our schedules don't match up most shifts so it hasn't been an issue)

I know she had had casual relationships before me and after ex husband but nothing like what we have.

Twice during sex now she has asked me to stop and said that sometimes "sex makes her feel weird" she becomes very closed off for a bit and even started crying this last time. Apparently this happened with her ex husband from time to time and it would start a huge fight.

I told her that I wouldn't want her to keep going if she didn't want to and that I'm fine with stopping in these instances, it seems like a stupid reason to start a fight. I also said that our relationship isn't based on sex and I'd rather it not be, I want to be there for her.

Anyway, I don't know how to help when this sort of thing happens, she didn't even want physical contact for a while when it happened the other night, I laid with her, covered her with a blanket and just talked when she was ready. I want her to know that she can tell me anything and I just would like to know from anyone with similar experiences how best to support her in these cases.

This is getting long but also I wonder if this could be the result of some sort of sexual assault in her past. I hope not, obviously, and she's never mentioned anything but I worry.

Give me a shortened version of the text
<bot>: Girlfriend 'feels weird' and has started crying during / after sex, says it's nothing I did and I believe her. How do I be there for her in these situations?