I second divine's post. I do not know if its a modern thing or maybe because culture has embraced sexuality and how free you can be with your sexual interests-its more acceptable to have had multiple partners and get intimate quickly. I am not that old but I have always valued myself, my body and my heart. When I wanted to sleep with someone I wanted to exclusively share this very important act of intimacy. I value it and I expect my partner to value it as well. I just do not see how quickly becoming intimate will ever be good for a relationship with the potential to get serious. This isnt about being married but it is about being committed. The fact that he even suggested that to me means he is not worth the gift of your body that you are giving him. Did he say this to you before or after you started having sex? If he said it before and you still slept with him then you may want to think about things with him for a minute. If he said that after sex then its an even bigger issue because he has already received the gift of intimacy with you. I would tread very lightly...