those girls sound like slappers to me. sorry, but i think its a bit much asking for sex when they've only just met you.
relationships arent everything. i didnt have a bf until i was 18 and at uni, and in fact in my life i have only kissed 2 guys and i do not wish to have sex. if i met a guy like you, i would be glad to meet an educated guy with standards, std free and who is after more than just one thing. your inexperience makes your first gf very lucky and your relationship would be very special. in fact i wish i had waited to be in a serious relationship before i had first kissed a guy.
its a bit differnt for me as i am religious but still, im sure some decent girl will be glad you waited