He doesn’t trust my love for him is real and Is ridiculing. What to do?

I rejected him around 4 years back.
Now I relaxed my mistake and went to apologise for being cruel. But now when I confessed my love for him, he thinks I’m joking and confused. He doesn’t believe it is true. Moreover is very cruel to me. He also has major trust issues with me but acts like I belong to him.

He doesn’t trust my love for him is real and Is ridiculing. What to do?
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