Me and my boyfriend don't argue as such, but we talk A LOT. If one of us does something that bothers the other one, we tell each other cos that's how arguments start, we get irritated by little things that each other does. Arguments do happen and you will inevitably piss each other off, you just need to swallow your pride sometimes and say "i'm sorry". We have disagreements and we've also had some really bad times but we talk through them and we've always get through. You do kinda have to make the extra effort not to get wound up or pissed off, everyone is different and has their quirks, just try to accept them and her for who she is.