I would say that if you are ready to give up your virginity and this guy is willing to take it from you go ahead and do it. It would be best if this guy has some experice as it will make it better for you. Even if you don't stay with him it will be memerable because he will know exactly how to reak you in, slow and soft. So I would suggest for you to allow yourself to be taken. At 19 your more than ready to shed your innocence.