What to say - take your time.
In the meantime, if you haven't already, read up and check out birth control and std protection.
I was not bad looking as I entered university but not in any way a hottie. I took many courses with mostly men, as I was pre med in the early sixties (I remember a class where there were three women in about two hundred). A couple of those guys became good school friends, as in I went to their weddings. I was naive beyond belief, except that I had started reading and gathering friends that were different from those I was used to. Big wake up that kept continuing.
My first dating experience was strange - a premed fraternity guy who kissed like a fish on New Year's Eve (nothing more, good grief!) and took me to the Rose Bowl the next day where he and a frat friend talked football the whole time, ignoring me, who knew a fair amount about football but was the shyest woman on the planet. I just pouted, which of course I recognized a while later as very lame.
My second experience was my first love, not to last but memorable for its good effect on me and I presume him. I had barely noticed him before he asked me out, except that he was cute and smart. He was across the lab table in a chem class. I could say not my type, but I was too naive to have a type and I've progressed to think typing is dumb. I quickly became crazy about him and he showed me what sex could be. He was sharp in a lot of ways, knew a lot about art and literature and culture and science that I was just tuning into. I loved him and vice versa, or so we thought, but we were incompatible in some basics - my remaining religion back then and his/his family's reaction to it, and his strong athleticism and my nonchalance. He married the woman after me and they have been together many decades; I'm not jealous, she fit him better. I was broken hearted in the beginning.
On reading a2k threads for quite a long time, I've learned how lucky I was that my first sex was wonderful.
Don't rush. Enjoy it when you get there.