So I work with this guy and I really really like him, but I'm concerned that even if I was lucky enough to be with him, I've told him that I've had sex. I've never gone into detail about it, but he won't think I'm a virgin when I actually am. The thing is he's older than me (I am 20, he is 25). Could l tell him that it was just oral sex and that I never went all the way. I want to tell him without looking stupid for lying, is that possible? I also think he'll think it's immature that I didn't tel him the truth initially?