I will join the chorus here, she loves you like a brother. Which means she wants you in her life, just not as her lover. So if you want to be BFFs and hear about the new Rs in her life then you are doing the right things. If you want to be her lover or nothing then you are making all of the classic mistakes.
Read DR. Read all of Cadet's information in his welcome message. She has moved out now, I would advocate going dark and using the Last Resort Technique.
You also might want to look into Nice Guy Syndrome and the book No More Mr. Nice Guy. Lots of guys have helped their W (in your case GF) move out in an effort to "nice" her back. You cannot. From a woman's perspective she has to respect her lover. Do you think helping someone leave you is worthy of respect?
1stlove, you really should try posting here before making decisions related to your R. The folks here can help you make the wise decision,not the instinctual one.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018