<human>: Can you condense the text into a few key points?

I have been dating my boyfriend for 3.5 months. He is very respectful of me and other women in his life. Him and his friends have a group chat where they plan hang outs and do some light chatting. There is alot of ball busting and inside jokes. Sometimes my boyfriend will hand me his phone and say something like "look in the group chat for the adress, time etc." and I will open up the group chat. There will sometimes be comments about me in the group from his friends. Some will be generally mean, such as "John, no one likes jane." Others will remark that I am particularly dumb such as "If she [jane] comes to the bar, make sure she doesn't say anything, like words." or "That bitch can't even chew gum and walk" (my personal favorite). My boyfriend will respond with a half hearted defense such as "well, she is coming anyways."

When I asked bf about it, he said that they are just like this because I am the girlfriend. But I have dated past guys and their friends have never been rude to me at all. maybe this is just the friend dynamic?

They hang out probably 3-4 times a week and I will come once a week. His friends will make snide comments, they especially like to make fun of my higher pitch voice, but they aren't as mean as they are over text. I am not a very good speller, as you can tell from my misspelled username, but I would say I am on a similar success and ambition level as his friends, and it's not like I constantly open my mouth and spew vulgar or stupid thoughts. I wonder what is friendly ball-busting and what is crossing the line? what should I do?
<bot>: Boyfriends friends mock me for being dumb or generally not liking me, he defends me a little bit, is this crossing the line? What should I do?