SUBREDDIT: r/relationships
TITLE: My girlfriend [18 F] ended our relationship [19 M] after 7 months because she wanted to focus on herself and didnt love me as much as i loved her. Should i try get her back?
POST: When my girlfriend left on a cruise 2 weeks ago everything was fine, she was telling me she loved me and was going to miss me so much and didnt even want to go on the trip because of me. 
When she was away she wasnt speaking to me like normal, and when she got back she told me she needed to talk to me. She broke it off telling me that she still loved me, she just need to focus on herself and didnt love me enough to keep me as her boyfriend. That was really tough to hear and i didnt take it very well. Ive been trying to stay as friends, messaging her seeing how she is, but she told me that Ex's as friends dont work. I cant get her off my mind and its driving me crazy. I tried talking to other girls but i just feel guilty and just think about her again. 
I dont know what to do anymore, should I keep trying to get her back or just cut off all contact?
TL;DR: 
girlfriend went on a holiday, came back and ended our relationship, wanted to focus on herself, not sure if i should let her go or keep trying to talk to her?