My FI’s friend currently does live with us. My Fiance bought a three bedroom house about almost two years ago. A few months after he bought the house (and a few months after we started dating), his friend moved in with us (as I was living there too by that time, although unofficially since I had my own place). His friend was in a bad situation with his roommate (his roommate was stealing from him), and so my Fiance offered to let him live with him.
So what my Fiance did was draw up a lease. He put everything in there to protect himself, even though he did trust his friend. So his friend pays a fair rent, and also chips in for utilities. My Fiance is all about saving money, so it was worth it to him to have his friend move in. Plus my Fiance wanted to get into real estate so was saving up to buy another house. I was more unsure about it, because I didn’t want to give up privacy with the new guy I was dating, but I didn’t want to start anything so I said I was fine with it.
Anyway, luckily is has turned out perfectly fine. His friend is usually gone during the week for his job, and when he is home he generally just holes himself in his room playing video games. He will occasionally join us for dinner or go out with us and other friends, but he’s a good guy and we both get along with him well so it’s totally fine.
Now, when my Fiance and I got engaged last October, this friend realized that he would have to move out soon. Nobody wants to start their married life with a roommate. However, my FI’s friend has been wanting to buy his own house for a while and has the money, so our engagement just got him more motivated and he should be closing on his new house soon.
So, in my case it all worked out really well. We’ve never had a problem with our roommate. My Fiance knew him beforehand so knew we would get on well together. He’s also a pretty private person at home so didn’t bug us. I did have to give up some privacy, like I can’t walk around naked haha, but that’s not a big deal knowing it’s temporary. And my Fiance was able to save money so that we can buy another house this summer (and still have enough money for our wedding in June 2017, too).
Now, if we had been married when he wanted to move in… Well, I probably would have been more hesitant. But I probably would have still allowed it, as long as there’s a timeline of when he will move it. Sometimes giving up a bit of privacy is worth saving money, as long as it’s just a BIT of privacy and it’s not someone who is going to be in all of your business (AKA parents).