How to fix what I screwed?

I think I screwed a potentially good relationship.

This man showed that he cares, gave me affection, but he has a strange character (he makes everything look like a joke) and so I thought he was just messing around. I often tell him "you are toying with me.."... and now he got offended. I start to realize that he was genuine. I like him, even maybe love him.

He is growing colder now and I feel awful for it.

How to fix it, I want him in my life?

How to fix what I screwed?
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