I'm going to break up with my girlfriend because she has a lower sex drive than I do.
Do you really think breaking up with her is a good idea?
Yes, I'm certain about it. It seems that she's more interested in my friends than me.
Sex is an important aspect of a relationship for many people, but breaking up with someone because they are less interested in sex than you is not a great thing to do. Maybe there's a reason that she doesn't want to have sex. You shouldn't just expect to have sex when you want to, and instead you should talk to her and see why her sex drive is lower.
It's too late, I already broke up with her.
It's not unreasonable to break up with someone over sexual incompatibility. But I do hope you talked to her about it first and then broke up in a kind way.