13. Catelynn Lowell and Tyler Baltierra (In General)
Catelynn Lowell and Tyler Baltierra are step-siblings and parents and lovers. That alone is pretty insane, but they make it work.
Kieffer Delp romanced Jenelle Evans for a time and contributed to some of her more epic meltdowns.
15. Amber Portwood in Jail
Amber Portwood did time for drug charges. HARD time. She was locked up for about a year and a half.
16. Chelsea Houska Cries
The most shocking thing about Chelsea Houska crying all the time on Teen Mom 2 was that she didn't move on from Adam Lind much sooner.
17. Farrah Abraham Returns to Teen Mom: OG
Farrah Abraham returns to the hilariously retitled Teen Mom: OG in this new sneak preview clip.
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