<human>: My girlfriend and I have been together for about two years. Throughout that we've broken up a few times, for a month or two at a time, but always end up back together. 

Things have been stable now for quite a while and we've been doing well. Aside from sex. Previously, every girl I've dated has wanted it as often as myself or more (roughly every other day at the very least). She has no libido. She enjoys it when it happens but thinks I should be happy with once a week or less. She compares it to her friends and says all her female friends want it the same amount and that I'm unreasonable. Then usually starts a fight between us because I'm in a bad mood after getting turned down or she's in a bad mood that I'm upset and want it too much. 
When we DO have sex, I usually feel like she's lazy about it. I do the work, then once she gets off she wants me to do what I need to do to finish. 

My question is, should this be a deal breaker? Should I just settle for what she wants, or she she be catering more to my needs? I know sex is a big factor when it comes to a lot of divorces these days. I'm not sure I should be sacrificing my desires for the rest of my life, but I also don't want her feeling obligated. 

On top of that, we've talked about moving in together come March. I'm wary of it because of the fights over sex. I stay with her at her place a couple nights a week and it comes up fairly often. I can only imagine what a problem it'll be when we're together non-stop.

Can you condense the text into a few key points?
<bot>: I want sex. Girlfriend doesn't. When we do it's not the best. Should it be a deal breaking issue? Do I need to just suck it up and accept the amount of sex I get?