Do you think it's bad that I want my boyfriend to delete some of his music from
Why do you want him to delete some of his music?
I really don't like it and I don't want him to listen to it.
Controlling people seek power over others by reducing their partners confidence and stature. When a person tries to control or manipulate others, it can be damaging and a form of abuse.
I'm not manipulating him, he's my boyfriend and he should do what I ask him to do because he loves me.
It does seem like you're manipulating your partner by expecting him to do something just because you're his girlfriend. Talk to him and mention that you don't like his music and see if he will delete it. If he doesn't want to do it, you have to learn to accept that he has different tastes in music than you have.