Pregnant Jana Kramer Shares Sweet Co-Parenting Moment with Fiancé Allan Russell and Ex Mike Caussin

The podcast host and fiancé Allan Russell will welcome their first baby together later this year

Jana Kramer is happy with how her family is getting along.

While speaking with Brian Austin Green and Sharna Burgess on her podcast, Whine Down, about co-parenting, the pregnant podcast host, 39, shared a sweet scene that recently unfolded between fiancé Allan Russell and ex Mike Caussin, with whom she shares son Jace Joseph, 4½, and daughter Jolie Rae, 7.

"My ex-husband was here the other day dropping off the kids because he knew that me and my fiancé were moving into our new house, and he's like, 'I'll just come drop the kids off,' " the expectant mom shared.

"And he came in and he had a beer with Allan," she continued, noting that as she took in the moment between her ex and her fiancé, "I remember sitting there going, 'This is really cool. I never would have dreamt it this way, but this is cool.'"

Russell, 42, is also a dad to 16-year-old son Troy from his previous relationship.

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Related: Pregnant Jana Kramer Reveals Moment She Told Daughter About Baby on the Way: 'My Wish Come True'

Chatting exclusively with PEOPLE at the iHeartRadio Music Festival in Las Vegas last week, Kramer spoke candidly about the challenges she is facing during pregnancy this time around.

“Obviously it's been a little bit harder. I’m just a little older and this is my third kid,” the expectant mom said.

“Things are a little different now, but it's great," she continued. "I'm just so blessed. I didn't think this would be possible, so it's a beautiful, beautiful thing.”

Following her exciting announcement, Kramer told PEOPLE didn’t expect to get pregnant again after dealing with previous difficult pregnancies. During her pregnancy with Jolie, Kramer revealed she was sick often. While on tour, she shared that she had a "barf bag" on stage and that her "sweet assistant Brittni" had to hold her hair back while she threw up after every show.

With her second child, Jace, Kramer said, she said had had hyperemesis gravidarum – or severe nausea.

"I didn't think it would ever happen again, if I'm being honest. I've been through a lot, so this has just been a really beautiful thing," she continued. "I'm letting it all sink in. It's everything I've wanted and more. Allan was so sweet. He wrote me this little sticky note saying, 'You deserve the happy ending.'"

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