Leah Messer in love! The twice-divorced reality star got all kinds of flirty with her ex-husband Jeremy Calvert on the Monday, April 18, episode of MTV's Teen Mom 2, but will they get back together? Unclear. Meanwhile: Jenelle Evans' birthday trip to New York City took a turn for the dramatic thanks to Nathan Griffith; Kailyn Lowry prepared for her husband's deployment; and Chelsea Houska was brought to tears by her baby daddy's lackluster parenting.

Also, special shoutout to Jenelle's boyfriend, David Eason, who thought the Eiffel Tower was in New York City. #Blessed

Chelsea Hates on Adam, the Sky Is Blue

Chelsea and Cole take Puerto Rico! Teen Mom 2's cutest couple had a blast on their "engagement moon," but Chelsea was in for a sad homecoming. While on vaycay, her daughter, Aubree, opened up about her dad, Adam Lind, saying, "He doesn't play with me. Cole will."

Chelsea cried when she heard the news, and told her mom that she wishes Adam was erased from Aubree's life: "Don't be a piece of s--t. Why not just go away, you know what I mean? He's only making things worse. I feel like if he was gone completely, it would be better for her."

Meanwhile, Adam told a fellow gym enthusiast that he resents Cole filling his dad-shoes, musing, "I know Chelsea's already trying to fill Aubree's head with 'Cole's gonna to be your new dad' type of thing."

Unrelated side note: Chelsea saw a wild baby horse nursing from its mother, and said the sentence, "Is it eating, or is it ess-ing some D?" So, yeah. That happened.

Jo Rivera Slams Javi's Military Job!

See ya, Javi! Kailyn prepared for her husband's impending deployment, and let's just say her ex Jo Rivera wasn't thrilled about the impact Javi's departure might have on Isaac. "There's something I just don't [like] about him being involved in the military family lifestyle," Jo complained to his girlfriend, Vee. "[It's] just, having someone being in and out of your life all the time that you care about is hard. I don't know — it's just something that really bothers me."

Isaac did seem to be having a hard time with Javi's departure but very sweetly informed his family that he was ready to become man of the house. Aw!

Jenelle Makes a Major Custody Decision

New York, New York! Jenelle hit the Big Apple to celebrate her birthday, but not before dining at hilariously named restaurant The Basics with her mom, and getting real about her custody battle with Nathan Griffith. Despite this dude offering to drop Jenelle's assault charges in exchange for more time with their son, Jenelle had some concerns: "I feel like I'm using my son to get out of trouble," she said. "And that's not right — it's not my son's problem."

Jenelle had a change of heart in New York, telling her boyfriend, David, "I'm gonna text my lawyer about what the deal's gonna be. And if they wanna drop the charges, then Nathan can visit with Kaiser."

Meanwhile, Nathan had this to say about Jenelle: "Man, I hate the woman. I just absolutely hate her." So, friends forever?

Leah and Jeremy Go on a Date

Did Leah and Jeremy find love in a hopeless place, by which we mean a flatbed truck? These two were getting all kinds of flirty during this episode, and Leah admitted that she still has the hots for her ex. "Jeremy's always flirted with me after the divorce," she said. "Do I think there's still feelings there? Yeah."

The single mom got super emotional while talking about how Jeremy was "good" to her during their divorce, but he seemed hesitant about the status of their relationship during a dinner date, saying, "I'm not gonna lie to you — there was nights I was scared for the girls."

Leah told Jeremy that they shouldn't have given up on their relationship so soon, and his response was slightly iffy. "I was damned if I do, damned if I didn't," he said while she cried.

It's unclear what the future holds for Leah and Jeremy, but they definitely seem to have some unresolved feels. (Though, it should be noted that Leah was "buzzing" — to quote Jeremy — during this particular encounter.)

Tell Us: Do you think Leah and Jeremy will get back together?

Teen Mom 2 airs on MTV Mondays at 10 p.m. ET.

Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics and more!