The 36-year-old remains the only Bachelor to marry his final pick, and as he told ET last week, he's not holding out hope that someone else will join the club.
"I wish [new Bachelor Peter Weber] nothing but the best. I hope that he can find himself a Catherine. If history's an indicator, the odds are probably not in his favor," Lowe joked. "That sounds really pessimistic, but I'm hoping maybe he'll be another Bachelor who can get married."
In the show's 23 seasons, just two other Bachelors have married someone from their season (Jason Mesnick and Arie Luyendyk Jr. both married their runner-ups). Last year's Bachelor, Colton Underwood, is still with Cassie Randolph, while the other men have split from their final picks. The franchise's other shows, The Bachelorette and Bachelor in Paradise, have higher success rates.
"I'm actually surprised there are as many married couples as there are because let's face it, we got engaged on a really wacky, kind of ridiculous TV show," Lowe said of him and Catherine. The couple married in 2014 and are expecting their third child. "It can be heartfelt and sincere at times, of course, but it also has a lot of wacky moments. And then when you think about all the people who are on the show, they come from different cities, so that just adds a different level of difficulty once you get engaged -- who is going to move and what does the future look like, and how do you live life without the cameras around."
"So, to me, it's really surprising how many married couples are there now. Six? Seven? People talk about the low success rate quite a bit, but I actually think given the circumstances it's pretty high," he added with a laugh.
One thing Lowe isn't surprised by is the franchise's recent focus on sex. Though he was a celibate Bachelor, the topic didn't come up until after his season. The emphasis on Underwood's virginity on The Bachelor last season was hard to miss. It was followed by Hannah Brown's blowout fight with contestant Luke Parker over whether she had been intimate with another contestant on The Bachelorette, Blake Horstmann's sexcapades on Bachelor in Paradise -- and Weber's first Bachelor promos, which make reference to his windmill fantasy suite.
"I think the show kind of tailors itself around the lead, and so going into my season, of course, the producers had a chance to be with me during the course of The Bachelorette. So, they knew who I was and they knew what I stood for and where my faith was and that kind of thing. They kind of knew what was off the table," Lowe recalled. "If you remember the season prior to me with Ben Flajnik, there was that big thing with him and Courtney Robertson in the ocean. I remember that was the big storyline at the time."
"So, I don't think things are changing like maybe some people think they are. And I think as far as Colton goes, I applaud him for taking that stance, because it's not easy, and of course, on the late-night shows and the magazines, you're always the butt of the jokes and stuff like that," he added. "It's not an easy thing to necessarily take on, but... I don't think the show is changing. They just kind of go with wherever the lead takes them."
Fans will have to wait a few more months to find out where Weber's season takes them, but for now, Lowe is encouraging the pilot to put a focus on his relationship (if he's in one).
"They used to bring me on every season to give advice, and I don't think I have a great track record. So for what it's worth, I would just say, 'At the end of the season, if you are engaged to someone, you just have to put them first, because there will be a million distractions and it's easy to get caught up in it,'" Lowe shared. "I'm not going to say I did it perfectly, because I did not. But you definitely have to commit to your new fiancee, and make them feel very special every chance you get, because it will be challenging."
The Bachelor returns Monday, Jan. 6 at 8 p.m. ET/PT on ABC.