Teen Mom 2 star Kailyn Lowry’s older son, Isaac, doesn’t turn six until Jan. 18 — but he already celebrated his birthday, because his stepdad, Javi Marroquin, is allegedly being deployed at the end of the month.

The kindergartener — whose dad is Kail’s ex Jo Rivera — had his party at an indoor trampoline park.

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As In Touch previously reported, Javi, 22, is allegedly being deployed as a member of the US Air Force; unfortunately, strict restrictions by the military mean the details of his rumored deployment are vague.

“Nobody really knows that he is deploying besides their closest friends and family. Kailyn can’t give out the specifics of his deployment. The military doesn’t allow it,” a source said just days ahead of Christmas.

“It’s not easy, but they are handing it the best that they can.”

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