Bachelorette Winner Jesse Csincsak to Be a Dad!

Credit: Chelsea Lauren/; Jordin Althaus/

Bachelorette winner Jesse Csincsak is going to be a dad.

Csincsak, 28 - who was engaged to DeAnna Pappas in 2008 before proposing to girlfriend Ann Lueders this year - announced the happy news to RadarOnline.

In a video, they tell their folks that 26-year-old Lueders -- who appeared on the 13th season of The Bachelor featuring Jason Mesnick -- is four months pregnant with a boy.

They plan to name their son Noah.

The parents-to-be are slated to wed in Las Vegas Aug. 28. See the top 10 reasons to get married.

Meanwhile, Csincsak's ex Pappas, 28, recently announced in Us Weekly that she is getting hitched as well. High school teacher Stephen Stagliano popped the question in May. "I was crying, holding his hands, and he showed me the ring," she told Us. "I just nodded, like, 'Yeah!'"