Many of my friends quickly lose interest in me

[sakura]

i don't care anymore if people lose interest in me.

"whateva, i do what i wawnt!"

which is what you should do. If you make a friend, cool, but never expect anything. 99% of the people you meet care about themselves only. So care about yourself, and consider others ok for being interested in you. If they go, then they're just as nonexistent as they were when you didn't know they were alive to begin with.