What does it mean when a guys says?

"You deserve better than me." and "I don't know how to make you happy."

Obviously we broke up; but I'm not sure it was for the same reasons. He didn't treat me respectfully and lied about himself to make me "like him more". I couldn't trust him after that. He said he'd "earn back my trust" but in reality he just got insecure and more manipulative. I just withdrew trying not to get hurt by his behavior anymore. Then we had another fight over something else he lied about. He says he wants to be friends, but I'm still not sure he "gets" why we broke up. He also keeps messaging friends about how "relieved" he is to not be in a relationship with me anymore because he didn't want the "responsibility" for me? Wtf?
What does it mean when a guys says?
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