What does it mean if a single guy turns down an invitation to go over to a woman’s home?

This seems like it would have the opportunity for sex. What are some reasons why a guy wouldn’t want to be in that situation?
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+1 y
I feel like I didn't add enough context in the original question, so here are some more details about the situation:

In this same conversation, he was telling me that he'd like to visit me at my new apartment and he started talking about all the things we would do together, including sexual things. But when I told him he could come over anytime and tried to set something up, he turned me down. So now I'm trying to figure out why.
What does it mean if a single guy turns down an invitation to go over to a woman’s home?
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