still feeling down

1/18/17My gf broke up with me yesterday because I don't satisfy her in bed....we broke up like 6 times before and got back together but I'm completely done now after she broke up with me I was fine but this morning it hit me and I can't stop crying because I love this girl but I know we are not good or even meant to be together it just hurts because I feel I wasn't good enough for her like I'm not good enough for anyone because I always end up single
Update 
So I still feel like crap and I miss her so much but I know we're not meant to be I just can't stop thinking about her and it seems like she don't care or miss Me I loved her more than she loved me and this really hurts 😔