Ah...you're a girl or a boy? What kind of music do you like?
There are not so many songs about friendship, like in any language, there are more about love.
What comes first in my mind is the song called "Friends" by Vama Veche, a rock band... (not heavy rock

) But it's about the good friends who're beside you, who help you have some fun, drink and forget after you suffer because of a girl...So I don't think you can dedicate them to her, it's rather something for a boy

There's also another song "My crew"...about a crew, about friends who are having fun..
So tell me exactly what you want, so I can help you..
