Before I start explaining my post I want to say that I have nothing against his friend, ( it's going to sound like I'm bashing him) he's a very nice guy, but there are reason why I don't want him living with us.
My SO has a best friend that is very codependent on him, and in a weird way my SO is codependent on his friend. To give you an idea, most of the time we go out he invites his friend so his friend can get out his place and do something, they play video games for hours every day together, he has even told me to be his friend and go out with him when he ( my SO) is working. We are moving in a few months to a new house and new state. The other night my SO came to me with the idea of his friend moving in with us when we buy our new house. He went on to say his friend is very lonely and has no reason to stay in this town if my SO isnt there. His friends is 30, never been in a relationship, doesn't have any friends but my SO, just unhappy with his life. He said it would help him. His friend already has jealous issues with me and my SO's relationship. I tried to explain to my SO that I didn't feel it would be a good idea. One we will be starting OUR life's together in a new house, his friend will either become bitter or overly attached living with us, he cant stay forever and he could become more depressed going from living with people to living alone again. Plus I don't want a roommate. I really don't see anything that good about it, expect maybe extra money cause he would pay rent.
I haven't straight up told my SO no yet. I feel like I would come off as a bitch if I say no. They are best friends. Am I wrong for not wanting his friend to live with us? Would you be ok with this situation?