Victoria Beckham Is a Work of Art

I know that this is completely thread-jacking and awful, but I'm 15 need advice.

I'm a high school sophomore who just got asked out by an adorable senior, who is my best friend's close friend. He has been in relationships before, is funny, cute, shy-ish, "popular," and very kind. I have been asked out before to homecoming and stuff, but never really on a date-date. (!!!!!)

He has come out to my friend as bi and recently got out of a long-distance relationship with a guy. He broke up his last relationship because his parents found out and totally freaked. I don't know what that means, but he told my friend that he has no feelings for Ex, and hadn't for a while. I don't know if he knows I know, (he was only "out" to like 5 people) but whatever. Also my other longtime friend is being judgey about his orientation, (I did not expect that from her) which I don't see as a problem at all. so how do I even deal with that? I guess just am confused about my feelings of being in a relationship with him soon after his last one ended. I really like him, and I believe he cares for me- so, good?!

I am sort of writing this because I just want to get my feelings out on this, but also because I NEED MAJOR ADVICE ON EVERYTHING FOR A FIRST-FIRST DATE

1. how does one kiss (I really don't want to mess up!)

2. outfit ideas? It's a movie date and will probably be a million degrees out

3. is it weird for a sophomore to date a senior? clearly I am not looking for an LDR, but I'm (shamefully) afraid of judgement from others in my really small class

ok, I am soo sorry again for thread-jacking, but I just need advice from the awesome people you are. thanks a milllion!!!! and sorry for the essay