Problem with my girlfriend?

For the past months I have not been totally in love with my girlfriend and yesterday was the worst day of my life! I came home and her face was red and she was crying hardly. She told me she hated me and that she found another woman who was beautiful and nicer than I am! She started throwing things at me and was yelling at me! I was shocked because I feel like I was so nice to her and she was so mean. My girlfriend does not have a job and she was a previous alcoholic and I know she is drinking more often with the woman she is in apparently in love with! I am successful and I purchased and own the house yet I was kicked out and now I am in a hotel room with all my stuff and my cat and I am so pissed at her. My friends think that I deserve the home because I am the legal and rightful owner. She threatened me over the phone and this problem is really turning bad and at this point I have no idea on what I should do.