Mackenzie Douthit and Josh McKee
Mackenzie McKee and her husband, Josh, have been together since the beginning of time (or at least the short lived Teen Mom 3) and have three kids together. Josh has never really seemed like a gem, and as of now, he and Mackenzie are separated after she witnessed some questionable footage of him on Teen Mom OG. It could have been a storybook romance, but, you know, it wasn't.
Kailyn Lowry and Javi Marroquin
This is another tricky one, because there was a time when Javi Marroquin and Kailyn Lowry really did seem to be devoted to one another. On the other hand, he was always very controlling, and there was that time that she hit him. Also he blamed her for a miscarriage. Javi's a pretty good father though, and he was a wonderful stepfather to Kailyn's oldest son. When these two get along, they do co-parent very well. It's just that, well, they seem to have a pretty tough time getting along.
Briana DeJesus and Devoin Austin
Briana DeJesus and Devoin Austin, from 16 & Pregnant and Teen Mom 3 fame, had a combative and strained relationship from the start. Their relationship didn't last, obviously, but the bitterness did -- for a while, Briana only allowed Devoin to see their daughter at her own home. Things were better for a while, and they even all went on vacation together, but things recently got way, way worse for them when Devoin took Nova to a pool and got drunk. Now they hate each other again.
Briana DeJesus and Luis Miguel
Do Briana and Luis Miguel even count as a couple? It's hard to say, but if they do, then they're definitely not a good one. They hooked up, barely knowing each other, and Briana got pregnant. Luis urged her not to get an abortion or to pursue adoption, then he split. Really, he's just not around for their daughter at all. We did see him on the show, and they did have a child together, so he seems like fair game for the list. But the guy is just SO absent.
Javi Marroquin and Briana DeJesus
Yeah, this happened. Javi Marroquin and Briana DeJesus became a thing after he divorced Kailyn Lowry and she joined the cast of Teen Mom 2. Incredibly, this was not a stunt manufactured for drama, though it sure as heck produced it. Kail and Briana nearly came to physical blows at one point, while Briana and Javi didn't exactly end things on the most amicable terms.
Briana DeJesus and John Rodriguez
We never got to see too much of John on Teen Mom 2, but for a while, it was looking like he might be a good match for Briana, Unfortunately, rumors started swirling about him cheating and lying and generally being awful, and of course Briana didn't care for that. It was a pretty unremarkable breakup, as far as Teen Mom goes, but still notable!