How do i forget a girl i deeply loved.It hurts.?

Me and her had a crazy story together with attacks here and there from her ex boyfriend.and suddently at one point everything seemed perfect.Everything was good and suddently i got a message from her best friend saying her parents are on to her and that we have to break up.soon after i just received a message saying it was good bye.this is the last time i will hear from her.she was sorry and it was done.I was left alone to hurt with no one.I broke down and cried.I gave her my heart.I took care of her.I stood by her when she had to vomit to hold her hair and pat her back.I woke up each morning to send her a text message wishing her goodmorning and saying i love her.I stayed up everynight to put her to sleep ending our convo with a lullaby i would recite to her every night when i think she is asleep already.A different lullaby which i write every day.Im suffering now.It has been 5 days already since.Haunting memories of the past keeps attacking me.I dont know weather it was my fault.The reason she gave was that her parents didnt want me to be with her.and that she has to listen to her parents.Thing is in the past she fought for her ex boyfriend when the same situation happened.Am i not worth fighting for?And people are just watching it from the side and saying im being obsessive for caring too much.for getting a lil hurt when she climbs on top of another guys shoulders in the pool.Was i wrong? Its haunting me and i need help.I loved her with everything i had.And now im just confused and sad.