Is he unhappy and miserable? How can I tell???

He’s always saying let’s breakup when he’s upset he says he feels that way in that moment but doesn’t even he’s not upset

Starts fights

Bags me when he senses something is wrong and asks what’s wrong over and over I insist nothing since it’s the truth but than he’s all ok idk what I’m feeling than a fight starts

Checking out women he knows multiple times a day st first denied knowing who they weee than admitting he knew them

Is he?

What else should I be watching out for if he is?

I’ve asked he ignores the question or says I’m fine