Rob Kardashian Posts Sweet Tribute to Blac Chyna

The couple are working through their relationship troubles.

"What a great year," he wrote on Instagram. "I'm so Blessed [sic] to have met the best Mama in the world Chyna and I got my baby girl about to be here."

"Thank you God for doing what you do," the 28-year-old reality star continued. "Thank you to all who supported us."

The couple, who are expecting their first child, have encountered some bumps in their relationship, but as Sunday's season finale showed, they've been able to work through them.

The final episode opened with Chyna, 29, still upset after the couple's explosive fight and Kardashian's subsequent disappearance. "I don’t even know if I want to stay with Rob. I don’t know if I want to do this no more with him," she confided to a friend.

The therapy session brought the pair closer together, but there was still one thing Chyna wanted from her fiancé.

Chyna asked Kardashian to take a paternity test "to shut down people and just to make you feel more secure."

Surprisingly, Kardashian agreed and the episode concluded with the test results showing that Kardashian is indeed the father.

In a sweet message to Chyna's son, Kardashian wrote on Instagram, "THANK YOU for letting me see what a great Mama you got! That was the first thing I fell in love with, the way she Loves FOR You is something I can't wait for! Can't wait for the bond I'm going to have with my daughter so Thank You King for allowing me to see that!"