Is it normal i just accept the asshole he is?

I don't know if it's me being strong enough to overlook the petty things or it's something else and it's not normal. But my bf can be a jerk and he knows it too. He's asked why I love him if he's such a jerk and I'm just like I know you are but I think it's just apart of your personality. In other words I don't take the mean things he does personally. I will for a sec but then I realize no that's just who he is. I mean guys can be assholes and for different reasons. I think one of the reasons which applies to him is bitterness. I noticed he gets all douchey when his ego is at risk so he pretends like he doesn't care or whatever the case is doesn't bother him. But I think it's just an act. Recently he did something really messed up that made me feel all kinds of emotions. This was after I did something that might've cost him his pride so he decided to portray once again he can care less and I'm here like you're such an asshole but that's who you are. It's almost like a bad habit of his to do such jerk moves. I know it's just a moment of nerves getting to him. We all have those moments where we do something we didn't mean to but it just happens out of frustration. I guess he needs to be more in control of his emotions. Sometimes I think he wishes he can change this about himself but he ends up accepting too saying "I'm sorry I'm just a jerk."