Javi Marroquin and Briana DeJesus have been in an official romance for the past several months. Over the weekend, the Teen Mom 2 couple proved just how committed they are at the birthday of his four-year-old son.

After a Twitter feud with Kailyn Lowry, Marroquin's ex-wife, DeJesus attended Lincoln's 4th birthday and shared several Instagram photos of the Power Rangers-themed birthday party.

According to a report by Radar Online on Nov. 19, DeJesus and her two daughters, Nova, 6, and Stella, four months, traveled to Marroquin's home in Delaware from their home in Florida to attend the party.

In photos from the event, Marroquin and DeJesus appeared to be a happy and blended family with their total of three children. As fans may know, Marroquin has been co-parenting son Lincoln with his former wife, Lowry, since their May 2016 split and, as fans may also know, things haven't always been great between them.

“‘Thank you friends and family that came and made Lincoln’s birthday extremely special. Huge thank you to my girl @_brianadejesus helping me put this together…,” Marroquin wrote in the caption of one of his photos online.

Since Marroquin and DeJesus began dating each other weeks ago, things between him and his ex-wife have gone from bad to worse and at the end of last week, DeJesus called Lowry out on Twitter for sending nagging text messages to Marroquin. In the messages, Lowry complained that she and Marroquin had already done everything he was taking DeJesus to do with him.

DeJesus shares her oldest daughter, Nova, with ex-boyfriend Devoin Austin and her youngest child, Stella, with former boyfriend Luis Hernandez.

DeJesus also shared a message with her fans and followers on Instagram during this past weekend's event, writing, “Happy birthday, big boy.” She also added that she was “helping Lincoln celebrate his birthday.”

Following Lincoln's 4th birthday on Saturday, Marroquin and DeJesus enjoyed some alone time when they attended a Golden State Warriors basketball game.

To see more of Javi Marroquin, Briana DeJesus, their families, and their co-stars including Jenelle Evans, Briana DeJesus, Kailyn Lowry Chelsea Houska, and Leah Messer, don't miss new episodes of Teen Mom 2 Season 8 on Monday nights at 9 p.m. on MTV.

Javi Marroquin also appears in Season 9 of Marriage Boot Camp: Reality Stars, which airs on Fridays at 9 p.m. on WEtv.