I didn't tell him it was my first time 😳

Libertad • ...
I was a virgin and I didn't tell my man that was my first time... He didn't notice anything and I didn't bleed at all ... so...We've been together for more than 7 months now, for some reason he think I have lot of sexual experience before him and he normally joke saying that I was a "bad girl"... So I don't know if I should tell him something or what, we have been together for a lot of time but we're not like a "couple" because he don't want any "responsibility" 😒... So I think he will feel guilty if he know about it now, I don't want to look weak or like a liar... I didn't told him that it was my first time because I felt a little bit older for been a virgin (I was 20, I know, is a stupid thought) and because I didn't felt necessary to clear that point in that moment...What should I do? 🙈