If you delete it, you'll most likely forget it completely.
Do you need someone in your life who says things like this to you? Or do you want someone who celebrates who you are and loves you for that?
Any guy that stopped talking to me after we had slept together for the first time, would not be worth my time chasing. I understand it was both your first times, so it must be hard for you. I actually do not talk to a guy friend anymore because at one point we started a relationship and when we had sex he didn't call me for weeks. When he did I said 'That's a real nice way to treat someone after that' and hung up on him. I only talk to him when I see him at random occassions, but it's been so long I'm actually engaged to a wonderful man now.
Find someone who loves you for you, anyone you feel that you have to convince to like you isn't worth it.
And remember, there's a lot of us here for you
Us fat chicks need to stick together.