My best guy friend is suddenly being super distant after I suggested we maybe try dating, how can I fix this?

We get on great, see each other or talk almost every day, regularly are referred to as each other's SO by people who see us together all the time. Three different people that day made "your old lady" or "your old man" comments leading up to this moment. And I was just like, why don't we give it a shot? Obviously we get along, we spend more time with each other than anyone else, we've been taking about him moving in with me for like 6 months. We even fooled around a little once, not sex but we've been naked. Slept in the same bed together several times. He said he didn't think that it was a good idea and specifically mentioned my ex, who he knows and who was in a similar life situation when we were together which ultimately led to the breakup. I told him alright, I see your point. It was just a thought. Two weeks now and I barely see him, barely hear from him, he seems to be actively avoiding me where he used to seek me out. I just want my friend back. 😞

My best guy friend is suddenly being super distant after I suggested we maybe try dating, how can I fix this?
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