Howie Day, 26, whom Britney met during her stint at Promises rehab facility from Feb. 20 to March 20, has checked himself back in to the program, Life & Style has learned.

Howie and Britney, 25, became close while in rehab, as Life & Style reported, and they have been out together since leaving Promises.

A friend of Howie’s says he’s upset about going back to rehab, but he’s confident he’ll recover. However, the friend doubts the relationship will continue, pointing out that neither will be a good influence for the other.

Britney has also fallen off the wagon by some eyewitness accounts. She was said to be drinking shots all night while partying in her panties last weekend, and TMZ reports that she’s been out at the clubs constantly.