weird for an 18yo male to not care about sex?

[john doe]

18yo m. Okay im wondering if this is weird that i have really just completely stopped caring about sex all together. Like when I was 16 and seen a hot girl id care but slowly I've just cared less an less to now where I don't care at all. Its not like a gay thing lol never had any luck really for some reason girls just dont like me idk. Like on a friday night if i went to a party all my friends would be trying to talk to and hook up with any girl they could but I just chill, drink, and talk to a couple other dudes in the room. Is this weird that it feels like ive kinda given up? whats wrong here?lol thanks