<human>: I've been with my girl for a year and a half and we wanted to move in together soon. The plan was always for her to move in wth me at my house because I own it and she only rents and its a really nice place.She just told me a couple days ago that she won't move in with me because my ex lives next door. My ex and I bought the house together and bought the house next door with the intention of flipping it but when she broke up she just moved into that one. That was several years ago but neither of us want to move because we live in an awesome area. It actually works out well because we have a dog that we split "custody" of and he just goes back and forth between our places as he pleases. 

My girlfriend said she won't ever move into this house because of that and she wants me to sell it and buy a new house with her on the mortgage but I think its way too soon for that. She thinks that at 1.5 years its time for us to move in together and if I'm not willing to move then we basically need to split up because she won't move in with me here and she doesn't want this to lead to nothing. 

Is it kind of crazy for her to want to buy a house together so soon or am I in the wrong? She told me there isn't a single girl who would be ok with this and I'm lucky she put up with it for so long but I figure lots of people would probably be fine with the arrangement.

Can you condense the text into a few key points?
<bot>: I live next door to my ex and my girlfriend said she won't ever move in with me as long as I live next to her.