My boyfriend is annoyed and tired of fighting?

I have been dating my boyfriend for almost 2 years, for the first year and a half, he was the perfect boyfriend! Now all we do is fight. I know that I find problem with everything, and I am always scared that something is wrong with him... but he acts differently towards me. Because he does act different, I create problems in my head, ask him about them, we fight, he gets annoyed, and we make up. It just keeps going in circles. He says that he still loves me and doesn't want to lose me, but that the fighting just has to stop and he thinks that he has just become tired of the relationship only due to the fighting. I am truly in love with him... What do I do?
My boyfriend is annoyed and tired of fighting?
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