So me and my boyfriend just started dating and  we have had sex already but last Monday he mentioned his ex while in bed he was so drunk I really wasn't in the mood but we still ended up having sex i was buzz not blacked out like he was but he mentioned her name I can't recall what he said exactly since I didn't hear him quite well I asked him to repeat it but he didn't and I don't know if he remembers I'm scared of bringing it up but I honestly don't want to have sec with him anymore knowing he could be thinking of her and wishing it was her instead of me like if he's not over her after a year of breaking up with her he was single for a year but I think it was because she kept pulling him back even tho she had a bf What should I do I really like him but I don't want to stick around if it's her who has his heart