We argue then have sex?

[LandonMitchell]

My girlfriend and I continue to argue all the damn time. I'm depressed for multiple reasons at the moment and she's only making it worse.. I keep telling her nothing's going to make me happy because I have lack of energy and only sit around (I am healthy though, very healthy)... The thing is, when we're done arguing we apologize EVERY TIME! I am currently living with my dad, step mom, 3 brothers, and step sister. My girlfriend and I have sex EVERY TIME after we argue and I admit the sex is good but I feel this isn't just bad for us but for my family. And I do not wish to break up with my girlfriend because I love her. What should I do? It's like we step away from eachother just to get bumped back up 3 steps.... then again... and again... We aren't getting any closer! ...Is she using me, maybe?