2 mo

Upset by this situation - please advise?

I am a little upset by this situation My boyfriend's mom who I am very close with invited me over to their house today for a party my boyfriend is throwing with his friends and immediate family. My boyfriend found out and called me saying he thinks it will be awkward since its all his guy friends and think I shouldn't come even though I would be hanging with his mom. He also said if you do come don't expect me to entertain you. Could you guys give me advice on this? Should I be mad? Is this a red flag? I have been with him for 3.5 years.
Upset by this situation - please advise?
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