Is something wrong with me? Why did I stop loving him?

This is my second serious relationship, I’m feeling the SAME exact way I did when I was over my ex. This time around my bf is the complete opposite of my ex, he’s a sweetheart and tries to handle my anger issues but last night he told me that he’s done that he’s tired of my anger issues and that I’m constantly getting angry over nothing. I sometimes feel like I don’t love him, that I’m done with him & just wanna be alone but this man has done nothing but loved me, he does show his frustration but I’m the cause of that.

Could something be wrong with me?