How to make someone feel like shit...

How about shoving every mistake they've ever made in their face. 

Or maybe being engaged to them and then telling them you don't wanna be married to a slut? 

Just being a complete asshole to the person you're having a kid with because you think you can. 

Telling them you're bored with fucking them, and nothing about them is sexy.

Telling them you and your friend think they're a 6.5 on a scale. 

Telling them that you're going to fuck a girl tonight and not to wait up for you when they just moved in.

Trust me I already feel like shit enough without you trying to make me feel this way so go ahead keep it all coming, nothing phases me anymore I'm used to it :/