"There was just a level of comfort and connection that I've never felt before. I never believed in that feeling of when you know, you know until I met him," Courtney, 36, told Us.
"Nor have I been with someone that I so clearly wanted to start a family with."
Courtney reportedly met Humberto, 39, on Instagram eight months ago.
"He had 'liked' a photo of mine on Instagram and I recognized his name. I remember like 10 years ago a friend of mine telling me about a guy she liked, Humberto. His name is so unique. I didn't put it together right away, but I was like, 'Wait, have we met before?' This guy is cute. Oh my gosh, he lives in Arizona,'" Courtney recalled.
"I DM'd him and then we went out a couple of days later and we've been together for eight months. He moved in in July, and the rest is history."
Courtney reportedly called her relationship with the attorney "really effortless."
"He actually lived on the same street as me but six blocks away. We were in the same neighborhood. He definitely courted me," Courtney bragged.
"He took me on really nice dates... We planned trips, and we were together every day."
Courtney revealed Humberto asked her father's permission to propose marriage shortly after discovering she's expecting his child.
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"He was out of town for a conference for work. I had one of those period tracker things, and I was a day late. I'm calling him like, 'Oh, my gosh, I think I need to take a test. I think I'm pregnant, I'm so excited,'" Courtney shared.
"He's like, 'Just wait until I come home,' which of course, I couldn't. He was like, 'Okay, just call me when you do it and I'll just step out of the conference.' He did and he was so excited. He bought some little baby stuff when he was there and came home the next day."
Courtney and Humberto learned they have a baby boy on the way earlier this month, Us reported. The couple had apparently shared the news with family and friends at a gender-reveal party.
"We had a girl name picked out of course, but we both really wanted a boy because his family, there's no boys on his side of the family. He was an athlete, he played football in college," Courtney admitted.
"I always wanted a boy. I'm a tomboy as you know. I grew up playing sports. My sister had three boys. I was like, 'Of course, I'm probably not going to have a boy.' We got the results back and I was actually shocked. I just thought in my head it was a girl."
Courtney called the turn of events "so crazy," and revealed she and her fiance have "seen the baby a couple of times."
"He's been amazing. He comes to every appointment with me. It's just so nice. Every time you hear the heartbeat, it's just so exciting. We saw his little profile the other day. He's really cute in there!" Courtney gushed.
Courtney accepted a marriage proposal from Ben on Season 16 of The Bachelor during its March 2012 finale, but they called off their engagement that October.
Courtney began dating Arie Luyendyk Jr. only days after she called off her engagement from Ben.
Although the romance didn't last long, Courtney revealed in February 2016 that she still liked to make out with Arie "from time to time." Arie was also Courtney's landlord and the pair occasionally worked in real estate together in Scottsdale, AZ.
The pair's dynamic confused fans for years, but both Arie and Courtney insisted their relationship was completely innocent and platonic.
"I've been through [this process]. You go into this wanting this fairy-tale ending, and it's so rarely like that," admitted Courtney, whose engagement to Ben only lasted seven months.