<human>: Can you give me a shortened version of the text?

I've [31 f] never dated a younger guy [28 m] before, and even though he seems great, I can't shake this nervous urge to run away. We've been seeing each other for almost 4 months. He makes me really happy, but I'm not sure he would fit in with my friends or family. He's also very different than the usual guys I date, not that those worked out. Should I just dive in and see where this goes, even though one of us may end up getting hurt? Or, should I trust that my gut is trying to tell me something and back off?
<bot>: I'm running from a younger guy who makes me happy. Am I just scared to commit, or should I listen to my gut?