lost my virginity

I recently lost my virginity I’m not sure how to feel about it, My friends are mad about me not taking it seriously and saying it’s a big deal, I feel like a slut for not caring I barely met the guy and it happened in the back of his car nothing special it was also his first time.
They are more mad because I met the guy this month and it’s our 5th time hanging out? And haven’t established what we are he leaving for the summer so I don’t see the point should I just ask anyways? I don’t really want a relationship or anything I like what we have right now but I feel like after what we done I kinda have to I have no idea ? What should I do we are hanging out tomorrow.