My boyfriend is demanding that I cut contact with my brother because he's convinced that I'm sleeping with him

and I honestly could not be more disgusted. Here's what happened. For some context, my brother and I

are not blood related. His biological mom was my mom's best friend, but she passed away at childbirth

and my mom decided to adopt my brother. I was four months old at the time, so I've only ever known

my brother as my brother my entire life. My brother is also gay. He is out of the closet and he is

in a long-term relationship with his high school sweetheart, so I've been dating my boyfriend for

nine months now. When I met my current boyfriend, I was flatmates with my brother and my brother-in-law

since the beginning of our relationship. My boyfriend expressed that he didn't like the idea

that I shared an apartment with two men, and when he said this, I was honestly just upset,

mostly because I was uncomfortable with his implications, but I tried to reassure him that he

has nothing to worry about. I would remind him constantly that one of the men is my brother,

and the other is my brother-in-law, and both of them are gay, but he still kept saying that he

didn't like it, no matter what I said. Among other things, my boyfriend doesn't like that I have

weekly movie nights with my brother. My brother and I have had weekly movie nights since I can remember

when my brother-in-law moved in with us. We included him into our movie nights as well. I even

offered to my boyfriend to include him in our movie nights too, but lo and behold, he refused,

and tried to claim that it was weird and that it sounded like we were having some kind of weekly

dates with my brother. It only got worse when he found out my brother and I are not related by

blood. That day we got into a horrible fight. In that fight, he tried to claim that I have lied to

him about my brother being my brother. For the record, I never lied to him. My brother is my brother,

and the way he became my brother is absolutely valid, and I also wasn't hiding that we are not

blood siblings. It really never crossed my mind to mention it, as it literally has no relevance to

...