WELCOME to Sober Recovery. You have found a really great place, with lots of Experience, Strength and Hope (ES&H) from folks who have been where you are, or are where you are.
He still did those things.
And has probably done them for the 5 years you have been with him. He just didn't 'suddenly' pop up in 'addiction mode.' Therefore, you have no clue whatsoever whom 'you love.'
Please do NOT allow him back into your home for now. He would do much better in a Sober Living Environment Facillity. There are quite a few in PA. He can also go to the Salvation Army, which has an incredible FREE additional rehab.
Rehab is, as OTL said is only the 'BEGINNING'. There is a LOT MORE WORK that he must do on himself to maybe rejoin civilization and become a productive member of society.
Please continue to post and let us know how YOU are doing as we do care very much!
Love and hugs,