should my bf take me with him?

a female friend from my bf's friend group is inviting all the guys in the group to visit her out of state in WA. I have never met her or his guy friends from this particular group, and my bf has flown out to her before in WA by himself before we were dating. I realy wanted to meet his friends because we have been dating for a year and I havent met his friends from this particular group.

just curious what is okie: do you think he should he take me with him out of courteousy or do you think he is right to go alone?