Employed roommate

I have a roommate.

He has a job. He makes decent money. 

He files his own taxes. 

 

It's a long story, but the important things to note -

 

He does not pay rent or contribute to bills at all.

He feeds himself but otherwise had full run if the entire house.

He has his own bedroom.

He uses the kitchen, had his own bathroom. He uses every room of the house regularly except my kids room and my bedroom.

I own my house. 

I am married and have a kid. 

 

Can I claim him as a dependent? I pay all the bills, mortgage, etc. Are there any deductions I can take? Etc. I'm mostly lost in what I can do on my taxes here.