Long Distance GF

I coupled with a girl that I met online 2 months ago,she is understanding, beautiful, caring, loving.My mom find it out that I was been in a relationship with her and also she scolded me and scolded her as well.She didn't pick the call when I say I want to call her and my mom wants to talk,I'm afraid she was selfish and thinking about herself only in that situation.This I'm 16 I worry so much about her and my mom says you can continue you're love n stuff after studies,there is 2 years to go.My mom ask me block her, delete all of her memories and all I did it and I still can't forget her,give me some tips on how to get out of the relationship for temporary just for the 2 years and how can i tell her that after having her num and I sent a message in tt it's shows sent and in snap is shows sent.Please give me a suggestions I'm breaking down.