'Teen Mom 2' Barrels Straight Into Season 4 [Trailer]

Just when we thought things were settling down for the "Teen Mom 2" crew, the Season 4 trailer lands in our laps with a barrage of rekindled romance, explosive fights and enough salty tears to sink a ship. If you think Season 3 was a roller coaster ride of emotion, just wait until you see what's in store. Take it away, Jenelle: "Oh my God, here we f**king go."

The girls are all struggling to balance their relationships with the demands of motherhood, and never has it been more obvious how complicated young love can be. Kailyn and Javi switch from a blissful to rocky state when allegations of abuse come into play, while Chelsea and Adam spark up their romance for just one night. Meanwhile, Corey remains in Leah's sights despite the new life she's trying to create with Jeremy. And as for Jenelle? Well, Kieffer's back in the picture, which doesn't bode well for her sobriety.

Check out the trailer and mark your calendars, folks -- Mondays will continue to be a mother when Season 4 premieres Feb. 18 at 10/9c.

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