3 months ago my girlfriend was angry and confused saying that many people says she is in love with another guy,she asked me not to believe whatever the bull they're telling me.it is now then I saw them chilling with the same guy.I was like the earth would immediately open and swallow me.I love her so much.what can I do because I love her.I tried to delete her contacts from my phone bt they are still in my memory.

You move forward with your life. Hang out with friends and family. Do volunteer work and meet new people.

We can not forget people we been close to. Neither the memories attached with them so first stop thinking that you want to forget her. She will be part of your memory and so do you of her. You have to move in life with all those good and bad moments. See friend and family who matters to you and people who care about you. You can not keep worrying about someone who don't care about you. Relationships needs commitment and this girl is not the kind, so thank god that you came to realize that. Good luck.