Your friend doesnt like him because ?? He was an asshole ?
Arent most males at some point in time ?
( Just like most females are bitches at some point in time aswell )
If shes your best friend, you should be able to tell her to BACK OFF without her getting all pissy at ya.
Best friends take the good with the bad,
And if they dont take the bad,
Then they AINT best friends~!!