M.D. in BOY DRAMA!

BOY OH BOY where do I start…?
A Senior in high I texted on instagram to start a convo by asking if he wanted to hangout. He asked for my snap and said I am very busy and will let me know when a good time to hangout is. Anyways, we kept snapping each other and he is sooo hot!!! I felt he wanted to get to know me because of what and how he texted me. One day I was hanging out at my friends house and I tell her all about it and she says she had a thing with one of his friends and was going to ask that guy about M.D at school the next day. Anyways, as I am laying on my friends bed snapping him, he snaps me a picture of his one of his hot hot friends. Then snaps me a video of him saying “On a scale of one to ten how hot is he?” I send back “100000” he replies with “huhhh” which i thought was weirddd. Then I ask if he wants to facetime and he says “I am completely naked in the shower rn” so I say ” how about after?” he then send a pic of him standing in the mirror of his abs with his face fogged up in the mirror. HES SO HOT!!!!! I just send him my number and he saves it in the chat. The next day I go over to my friends house again and she tells me that she talked to his friend that she is close with and didn’t mention any names. Her friend said that he has a girlfriend he is very serious about. The thing is there is no proof… no evidence… nothing adds up…This “girlfriend” must have nooo social media, doesn’t have any pics posted with him, doesn’t like to be seen with him and anonymous to half of the school. Its been like a week and we are talking still. We haven’t talked in person yet. Why would someone serious about their girlfriend call another one cute, send abs, and offer to have sex with me?!? I know a fuckboy when I see one and I see one butttt what I don’t see is a girl. I fall for guys like him he is so attractive and sweet. I don’t understand him like why does he anyways what to know how I am doing and how I am but not answer those sorts of questions when I ask? Is he trying to set me up with his friend? Is that why he is still talking to me? I am confused.