Why does he keep calling

I dated a guy for a few months before he decided that he wasn’t ready for a relationship. I had no issues with it. 2 months went by and he is calling/FaceTime and texting. He even comes over to “ check on me”. None of the conversations are sexually driven. Usually if a guy tells me he doesn’t want to be in a relationship we don’t speak anymore unless they’re trying to sleep with me and I have to tell them off. this Gemini guy keeps coming back. I’m not sure what the back and forth is about. He doesn’t want to hang out though. He said that would be leading me on. He just wants to call me and see me sometime. I think this is weird