Jennifer Aniston is sticking by pal Portia de Rossi after rumors of rehab and problems with wife Ellen DeGeneres. We think she is such a great friend! Do you agree?

"After Portia got out of rehab, Jen reached out to her and they've been in close touch ever since," a source told the National Enquirer. "The joke among Jen's friends is that she should charge a fee for her counseling. They call her "Mama Jen" because she's a nurturer and caretaker to everyone."

Reports also suggest Aniston sent her pal self-help books and helps her cope with relationship troubles.

"Jen has listened for hours as Portia poured out her heart over the issues she and Ellen are grappling with, including fighting over whether to have a baby and how to deal with Ellen's jealousy," the insider continued.

"Portia confessed to Jen that Ellen is so possessive that she's even threatened by how close Jen and Portia have gotten!"

Life & Style reported last month the actress spent 30 days at Passages Malibu for drug and alcohol struggles.

"Portia hadn't been happy for a while and was drinking and isolating [herself], and Ellen confronted her," the source told the mag.

"Portia lost it and blamed Ellen for driving her to drink because of her controlling ways and said she wasn't in love with her anymore. Ellen was crushed and screamed at Portia to get out."

Another insider echoed these claims, adding, "Portia entered Passages Malibu rehab facility in early May for a 30-day treatment for drugs and alcohol. Ellen visited her every weekend to support her while she was there."

Celebrity journalist Randy Jerrigan will release a book spilling all their marriage secrets.

"Many fans don't know that Ellen and Portia have had a very tumultuous romance since the very beginning," he told Radar Online.

We think it is great Aniston is helping her friend! Can you believe DeGeneres is jealous? Sound off in the comments section below!