Any Advice...Please

I am a wife and a mother of 2. I found out for the first time about 1 month ago that my husband is addicted to percocets. I knew something was going on w/ him...but I just couldn't figure out what it was, and he wouldn't tell me. He finally broke down and told me he needed help. He went into a medical detox facility...and came out the person I married again. It was nice for the first 2 days...then he had to start outpatient rehab, he went and after the meeting he went to get pills. He came home and told me, so a few days later he went into an inpatient rehab. He came out 2 days later b/c he said it was dirty in there. He agreed to go into another facility if I got him out of that one. When it was time to go into the new rehab, he said he thought he was strong enough to do it on his own. He seemed to being doing well for 2 weeks, and now just the other day it seems like his behavior is changing. I don't know what to do. I've never been through anything like this before. I love him, but I don't know if I can stand living like this anymore.