Of course, inevitably, not everyone was supportive of Kailyn and Javi's good news, but the bride-to-be didn't care.
"I won't let haters take away our happiness on this one!," she tweeted.
Javi also got in on the good news on Twitter, tweeting out his excitement and devotion.
"I love my fiancé @KailLowry! Couldnt even dream about the way my life is turning out to be!"
Kailyn, who first appeared on 16 & Pregnant, has a 2-year-old son named Isaac with ex-boyfriend Jo Rivera. One Twitter user asked Kailyn what Jo thinks of her engagement. She replied, "He understands that I'm not 16 anymore. My life is on hold for no one."
We wish the future Mr. and Mrs. Marroquin—and little Isaac—all the best.