I just want to start by saying that I'm senior in high school, and I've never kissed anyone before, so don't worry about it!
I was in the exact same situation as you were several times. The only difference is that I was always with this guy named Dan who liked me, and we were friends for a long time. This happened in my summers going into my junior & senior year, and even though I liked him (not too really in that way though), I knew if we were to make out, he would only be interested in me for a little while because thatís the type of guy he was. Another reason why I didnít do it was because I had met someone SO much better than him even though we werenít going out
, and I wanted my first kiss to be with someone special.
Anyway, I said no, and Dan was really nice about it. The good thing about your situation is that you donít know this guy, so it shouldnít really matter. Donít worry about it at allÖ besides, would you like having your first kiss with just some random guy who doesnít even youíre your name? As for ruining your chances with him, if all he wants is to make out, and he doesn't even really care about YOU, then he really isn't worth it. Just remember that no one can make you feel stupid except yourself.