Credit: MTV

Time to take a quick walk down memory lane to the Teen Mom 2 Season 5 Reunion Special, where everyone's favorite tattooed baby daddy, Adam Lind, accused Chelsea Houska of cheating on him while she was pregnant — with his best friend no less!

"Chelsea you did horrible things to me," Adam said while Dr. Drew tried to contain his eye-roll. "The things you've done is a reflection of what I've done to you. When she was pregnant with Aubree she slept with one of my best friends that I went to high school with. While she was pregnant with my child. That has scarred me for life...Chelsea you've slept with my brother."

At the time, Chelsea accused Adam of blaming her for his own problems. "You just can't take any blame,” she said back to him. “You can't accept that you're just an asshole. You're always gonna blame me." Now it appears as though Chels never cheated on Adam in the first place! Dun, dun, dun!

“Chelsea didn’t cheat on Adam with his friend,” a source tells RadarOnline.com. “Adam left Chelsea, and she started dating a mutual friend who was a really nice guy. She wasn’t sleeping around or trying to hurt Adam like he claims. It’s pathetic he has to bring up things that happened five years ago to try to prove a point.”

The source also reiterated Chelsea's claim that Adam blames other people for his own mistakes — and even did so after he got into a fiery car crash with a couple of old folks in February! “Even though the car accident was clearly his fault, he blames the elderly couple he hit,” the source says. “He is the type of person who thinks everything he does is someone else’s fault.”

As of now, Chelsea and Adam have limited contact. Apparently, "Chelsea just avoids talking to Adam whenever possible,” and they only see each other when completely necessary. While Adam still has visitation with Aubree, the source says that could change if he goes to jail for charges stemming from his accident.

Meanwhile, Chelsea is focusing on being a great mom and learning from the mistakes she made in her past (like hooking up with Adam while his girlfriend, Taylor Halbur, was pregnant)! “Chelsea learned her lessons and grew up in order to be a good role model to Aubree,” the source says. “But Adam hasn’t.”

Do you think Chelsea and Adam will ever learn to co-parent and get along for the sake of Aubree, or do you think Adam has too much growing up to do? Let us know below!

Source: RadarOnline.com