Jason and Molly Mesnick are expecting their first baby together.

“Our family is getting a little bit bigger!” Molly announced to PEOPLE. “I’m into my second trimester and I feel really good.”

The couple started dating after meeting on Season 13 of The Bachelor. This is the first baby for the pair, but the second one for Jason who has son Ty, 7 with his ex-wife.

Jason informed Ty of the new addition via a game of Hangman. “The answer was ‘Tyler is going to be a big brother,’” Jason recalled. “He’s been asking me for years. He’s always wanted to be a big brother. So we played the game and he looked at Molly and I and said ‘Really?’ Molly made him a t-shirt that says ‘Big Brother’ on it and he’s really proud. He wore it to school.”

Congratulations to the growing family!