<human>: Long story short. My mom and I don't have a great relationship. I however have had a fantastic one with my best friends mom for over 13 years, sometimes even calling her my mother over my own. 
I've lived with them for years now until recently when she had a financial crisis and sold her house. I'm living with another friend and she's with her oldest daughter. 

She was supposed to move in February and I got a message this morning saying she's leaving next Wednesday. 

Of course it got me sad so I went to my gf for comfort. And she got mad, told me to stop being emotional and shitty and to stop trying to ruin her mood and her great Saturday. 

I don't know what to do. I felt like shit already and she made it worse.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Adoptive mother is leaving out of state unexpectedly, gf tells me to stop being emotional and not to ruin her day when I go to her for comfort