I cried during sex?!!

I never have been able to orgasm during sex and still can’t. There was a time when I was having sex with my boyfriend and it felt so good I felt like I was about to have an orgasm which I never felt before during sex and then I started to cry! My man didn’t see me because it was dark and I wouldn’t want him to see lol😭 but that really good almost cumming feeling went away when I started crying lol. I have no idea why I was crying? Anybody know what could’ve caused this?