<human>: Give me the gist of the text in a nutshell

A really good friend of mine wants to live with me but I think this is going to mess up our friendship. Long story short I got a job at a large firm and will be working very long hours. I also want my place to be clean. 

He, on the other hand, is still studying and is known to be extremely messy/a party animal and I've had a lot of problems in the past with messy flat mates, to the point of no longer being friends with them. 

I really do love him as a friend and have known him for ages - but how can I tell him in a nice way that I would rather not live with him, without hurting his feelings.
<bot>: how do I tell my really good friend that I don't want to live with him as I know it will jeopardise our friendship?