"We are so thrilled to announce that we are expecting our second child! We consider ourselves so blessed to have Samuel in our lives and we are already thanking God for the newest edition to our family who should be arriving in late May. We are so thankful to everyone who has followed our little family and encouraged us along the way," the couple said in a statement to ET on Friday.
In April, Sean and Catherine -- who got engaged on The Bachelor -- opened up to ET's Lauren Zima at their home in Dallas, Texas, about what it's like being parents.
"We have a really good balance right now. We are really passionate about what work we do. We have a sweet baby boy and our marriage is going so well," Catherine shared. "Every duck is in its row."
"I think Catherine does a great job of trying to be the best wife and mother she can be," Sean added, gushing over his spouse. "That puts the pressure on me and I feel like I need to help her out as much as I can, too, because I need to reciprocate that."
Check out more of ET's exclusive interview with the happy couple: