Kailyn Lowry & Leah Messer's Costa Rican Vacation: What REALLY Went Down?

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It's hard to think of anything less scandalous than a friendship developing between two longtime co-workers.

But when the colleagues in question are Kailyn Lowry and Leah Messer, a simple vacation is enough to fuel months of speculation.

Primarily, the rumors around the possibility that Lowry and Messer are dating.

It doesn't help that one of their co-workers -- *cough* Jenelle Evans *cough* -- has been providing grist for the mill by implying that these two are more than friends.

So what really happened when the moms set off for Costa Rica together?

Well, we finally found out on Tuesday's episode of Teen Mom 2.

Take a look:

1. Besties With Benefits?

Besties With Benefits?
Yes, despite their repeated denials, some fans remain convinced that Kail and Leah are involved in a romantic relationship.

2. The Travelers

The Travelers
Leah and Kail vacation together on a regular basis, and this has sparked romance rumors because ... they occasionally sport swimwear and take photos together?

3. Kail and the Kids

Kail and the Kids
We're not really sure, to be honest. You'd think the fact that Kail and Leah frequently bring their kids on these excursions would be enough to quash rumors of an illicit affair, but apparently not.

4. Central America Bound

Central America Bound
This time around, Kail and Leah set out for Costa Rica without any kids along for the ride.

5. What Happens in Costa Rica ...

What Happens in Costa Rica ...
Many assumed that Lowry and Messer engaged in all manner of wild behavior, and not just because they left the kids at home.

6. Ups and Downs

Ups and Downs
Just prior to the trip, Leah endured what must have been one of the most tumultuous periods of her life.

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