Is this even fair?

So me and my boyfriend are long distance for 3 months now. I was asking him to block an ex girlfriend from his instagram account. He follows his ex and she follows him back. But he will not block her and gets angry with me when I mention it. He says they are only friends and there's nothing there but yet his best friend decided to follow me who I have never met before but he was asking me to block his friend. His best friend followed me and I follow him back. I do not know the best friend but I decided to follow him because he is my boyfriends best friend and my boyfriend has a huge problem with that and wants me to block him. Is this even fair? He gets angry when I ask but its ok for him to ask me to block someone and this is only his friend not his ex.

Is this even fair?
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