is the rumour true that girls cant keep secrets by that i mean if i tell my friend(girl) that i like her friend will she tell her friend that i like her? they are best friends.

One of my friends got a girl by first telling the friend of the girl that he liked and then later she found out and they are now together. she liked him to thats why

i know its lame and lack of confidance to tell a girls friend but she is my friend and i thrust her and if shes good she will help me get her friend but its risky