Am I thinking too much?

I am dating a guy who is 2 years younger to me. He is nice and gentleman kind. I like him a bit and he says he likes me. I slept with him on our 2nd date. I think I have ruined everything. I don't think he won't ask me to be his girlfriend. He said that he wants long term girlfriend. We have been on 3 dates. And recently he got busy. We haven't been talking. I think I'm catching feelings and I feel it's going to end badly. He told me that he had short term relationships. His longest relationship was 5 months. And I got to from his ex's friend that the communication will fizzle out and he won't put much effort. And the coworker of this guy told me that he is a good guy and anyone will be lucky to have him. He does put efforts more than me. I had terrible past. I feel like ending because I don't want to hurt myself or used for sex. Am I thinking too much?
Am I thinking too much?
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