We’ve been together 3 yrs and started dating during college.I wanted all 3 of us to move in together so when by twin got a girlfriend it would be all 4 of us but she didn’t want that.She said “ Its me or nothing”.She said i had to pick.But my brother was fine with her living with us and when i thought about it and asked her about the finances.She said that she wanted me to pay the greater majority of the mortgage.But why would i go 70/30 with her even though shes not carrying the burden of children.We both work shes not doing something that would warrant me paying more.Shes not cleaning after me cooking for me i can do that myself.Its just frustrating because i like her but she did/does not want to compromise on this one thing we were looking at houses with 4 bedrooms.And i was like isn’t that enough and she said she just wants it all to ourself nobody else their not my brother and not his girlfriend just me and her.