I started getting so sensitive when my boyfriend goes out to see his fucked up friends and family. Am I wrong? Why am I being like this? :/?

My boyfriend never introduced me to his friends and family as he's got a fucked up family and friends.. and I really hate it when he is out to see them. We have such a great relationship. However , he thinks that i never understand his situation. I think it is also not fair on my side that I have never met his relatives and ask me to understand him. We've been together for 9 months.
I started getting so sensitive when my boyfriend goes out to see his fucked up friends and family. Am I wrong? Why am I being like this? :/?
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