A little background- my roomate and I have been best friends for years. We recently moved in together and she has a boyfriend. Before moving in we agreed that one night a week and one night on the weekends would be sufficent for him to sleep over. However, she breaks that rule weekly even though I have already addressed it. On top of that she’s taking bits and pieces of my food and soda like I won’t notice. Her boyfriend is always over and they usually control the main living area so I get stuck in my room watching TV since they take over our flat screen in the living room. He’s also constnatly leaving the toilet seat up. On top of all this, she’s a little poor and doesn’t want to have the heat on. She has a space heater for her room but turns the central heat off when I turn it on. I’m pretty sure space heaters use more energy than central heat would. She also doesn’t lock the door when she leaves if I’m still there and sometimes the door doesn’t shut and one time my cat got out. We disucssed after this, her locking the door so that we would never have that problem again but she’s still not doing it….any suggestions? I’ve already addressed all of these issues with her at least once, the toilet thing has been done twice….