Why won't my girlfriend have sex with me?

Asked by qualitycontrol (2573) September 10th, 2008 from iPhone

we hung out as friends for about a month before we started dating and have since been together for a month and a half. She isn’t a virgin but she said her last boyfriend used her for sex and then dumped her which is why she says she wants to wait. I just can’t help but wonder that there may be other reasons. I’ve shown her in so many ways how much I love and care about her. I guess she still doesn’t trust me though. It is so frustrating because I want to be closer to her. What can I do?