How can I get over this fear or rejection?

When dating, at first, I am very alluring. When I find a guy and I express interest in him, he usually express interest back.

With a few guys that I dated, a few of them rejected me because they lost interest in me. They dated me and zipped out too early to get to know me—which is fine, but the rejection (s) hurt. I found this guy and I think he likes me back.

Over the past few weeks, I have questioned: when is he going to lose interest in me? I’m just afraid that he will decide I’m not as interesting as he may have thought. I guess I’m just really insecure. I know this is a shitty mindset to have. How can I help correct this thinking?
How can I get over this fear or rejection?
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