What are some fun things to do with my boyfriend? We live together.?

Wellll, neither of us have a car yet and we're working on finding jobs. And we live together with his mom. We aren't OLD. We're 18. And I JUST moved in. We fight alot now and its getting old and irritating. We both play video games on xbox 360. What are some OTHER fun things to do? Its all snowy outside and neither of us really want to go outside. We usually watch tv or netflix. We barely play games together seeing how we're right next to each other. Also, how can we keep from arguing so much? D: Thanks.