My lease is ending soon and I've asked my best friend, Joe [30M] to move in. We've been close for about 4 years, and I think we would get along very well as roommates. 

Before asking Joe to move in, I had a discussion about it with my boyfriend, Alex, of 1.5 years. I think Alex is awesome and I don't want to do anything to jeopardize the relationship we're building. In the interest of full disclosure, I confessed that Joe and I kissed a few years ago, but that was it. I have zero romantic interest in Joe. Ultimately, Alex was supportive and said he was cool with Joe moving in. 

Since then, my family (led by my father, [60M]) has intervened and said that this is a terrible idea, and if Joe moves in, I should consider my relationship with Alex over. My Dad says that Alex won't object because he's a good guy, but no man would honestly be ok with this no matter how much he trusts his girlfriend. He says I'm putting myself in a position where things can go wrong. 

My family doesn't usually comment on my relationships, so I take their advice very seriously. I told Alex what they said, but he brushed it off and said he really doesn't mind. I intend to talk things out with Alex again later this week, and probably show him this thread. 

Is my Dad right? Is Alex just playing cool by not objecting? Should I tell Joe he can't move in? Is it possible that Alex actually is cool with Joe moving in? Help!
user
My bf says he's
assistant
My lease is ending soon and I've asked my best friend, Joe [30M] to move in. We've been close for about 4 years, and I think we would get along very well as roommates. 

Before asking Joe to move in, I had a discussion about it with my boyfriend, Alex, of 1.5 years. I think Alex is awesome and I don't want to do anything to jeopardize the relationship we're building. In the interest of full disclosure, I confessed that Joe and I kissed a few years ago, but that was it. I have zero romantic interest in Joe. Ultimately, Alex was supportive and said he was cool with Joe moving in. 

Since then, my family (led by my father, [60M]) has intervened and said that this is a terrible idea, and if Joe moves in, I should consider my relationship with Alex over. My Dad says that Alex won't object because he's a good guy, but no man would honestly be ok with this no matter how much he trusts his girlfriend. He says I'm putting myself in a position where things can go wrong. 

My family doesn't usually comment on my relationships, so I take their advice very seriously. I told Alex what they said, but he brushed it off and said he really doesn't mind. I intend to talk things out with Alex again later this week, and probably show him this thread. 

Is my Dad right? Is Alex just playing cool by not objecting? Should I tell Joe he can't move in? Is it possible that Alex actually is cool with Joe moving in? Help!
user
My best friend, Joe
assistant