So I haven't had a relationship for the last year and a half, and I used this time to become good at picking up HBs. However, two moths ago, I had sex with this girl that I really, really like and later, we started dating. We've been in a relationship for almost a month. Everything was going smooth while I was gaming her before we started dating, but now I sort of run out of things to say when we're together. I also feel sort of insecure and I can't really explain why. Having sex with her is great, but we haven't done that in almost two weeks and I get the feeling that she doesn't really want to. I think she feels my insecurity in some way and that's why she's becoming colder. Until a week ago she was calling me and texting me to tell me that she wants to go out, while yesterday, after we went to see a movie, I suggested we go to my place, but she told me to give her a ride to her place. I get the feeling she doesn't really want to talk to me or see me for a long time and that she feels awkward around me... I need some advice.

Thanks in advance.

I am in the same boat as you. Not only am I insecure I find it hard to connect with her.

Best way to hide or remove your insecurity completely with her or with anyone else in the future:

1) 30 minutes before you see her do intense cardio for at least 3 minutes or until you are out of breath and 50 jump in jacks.
2) Work out everyday and get muscles, you will feel better about yourself and you will tend to be less insecure in general.
3) Read Matt Hudson's how to train your girlfriend manual. It has some really awesome tricks.
4) Have more than one girl in the loop, in case one does not work out you will have the other.