Credit: Adam Rose/FOX ©2012 Fox Broadcasting Co.

Here's yet one more reason why Glee stars Lea Michele (Rachel) and Cory Monteith (Finn) are still the cutest celebrity couple ever.

Cory has entered rehab, but Lea is supporting him every step of the way, according to People.

"Lea is an excellent influence on him," a friend of Cory's reveals. "She's good for him."

"She's really calmed him," the source adds, which is in line with previous info we've gotten about the couple.

Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co.

Sources aren't surprised that Lea is standing by Cory during this tough time.

"She would have been very supportive and encouraging for him to seek treatment," continues the source. "It seems like she is a very steady hand."  

Lea and Cory might be different, but their relationship continues to thrive.

"They seem to compliment each other's personalities very well," says a second source. "They are always very affectionate and sweet to each other. Cory acts very protective of Lea."

Their friends also reveal that the couple would in fact drink together, but they didn't seem to overdo it.

"The two of them drank together, but drank in a way that seemed to be responsible," says a source. "They both seemed in-control and not messy."

This is such great news — not that we really had any doubt that Lea would be there for Cory.

We're just glad that Lea and Cory's real-life relationship is much more stable than Rachel and Finn's relationship on Glee.

Source: People