I met a girl who I liked for a year... And I still like her... but my 10 year old friend got close to her and she also got close to him... My 10 year old friend knew everything about me and the girl I liked... but my friend starting spreading rumours about her and made a bad intentional story and the girl is aware of that story yet she chooses to be friends with him and is still attached to him.Should I be friends with that girl ? I have been hurt a lot by both of them ! When I see any one of them I feel hurt and it starts bothering me day and night.Plz help

"but my 10 year old friend". Friend for 10 years or 10 years old, makes a big difference. If you are 10 years old, you are too young for "When I see any one of them I feel hurt and it starts bothering me day and night."

I agree, if you are 10 year old, this is too young to be having any relationship beyond just being friends. But you merely go on, and do nothing, things like this will happen many times in your life.