How do I get my friend back?

I was friends with a guy from work. Things went a little too far and we ended up messing around. He is married and we decided that we wouldn't do this again, however, we started to feel awkward around each other and he still called me for break but not as much. I started to feel anxious and depressed and wanted it to be the same. I started calling him and trying to get his attention. Now he is upset because I accused him of something he didn't do. I have since apologized and he said to give him time. Is he blowing me off or does he want to work on our platonic friendship.