How do you get your boyfriends friends to like you?!

There all very immature, but they all have girlfriends and I’d love to be able to go on double dates etc with them all, and get to know them, however I’ve met them a handful of times and they all say they hate me because I’m “too quiet”

I am quite shy but surely that ain’t a reason to hate someone..

They also all say behind my back that I look like Hagrid because I have naturally very curly dark hair, which goes kinda frizzy throughout the day (as curly hair does🤷🏻‍♀️)

How do I get them to like me?!