Why does he still have my number?

I had sex with this guy a couple of years ago while he's been in a relationship. Last year he tried to have sex with me again but I didn't go through with it. Recently I asked him if I could give him a massage he said he didn't think it was a good idea. He said he was trying to be a good boy. Then yesterday when I saw him I told him to call me. And I asked him if he still had the number I had given him a couple of months ago he said yes.

Why would he keep my number if he's trying not to cheat again?
Why does he still have my number?
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