I'm going to let my bestfriend sleepover even though my girlfriend doesn't like her
What's your girlfriends issue with her?
She thinks that my best friend's behavior annoys me a lot of times
It's your place to decide who can sleep in your house. Be careful, though, your situation could get ugly very quickly.
That's right. I'm the one who should be in control of my place.
You're absolutely right but make sure to talk to your girlfriend and understand her concerns.