"I have not [spoken to him]," Lauren toldUs Weekly.
"I know he started his coffee company, Generous, which he was working on when him and I were living in Denver, and so I texted him and congratulated him because I know that was a big deal for him. I think it's such a cool company, so other than that, not really."
The former flight attendant confessed "it's hard" that the pair travel "in the same circle and same world" given they are both members of Bachelor Nation.
"But I know a lot of what's going on his life," Lauren noted, "and I wish him nothing but the best."
Lauren, 28, and Ben, 30, got engaged at the conclusion of The Bachelor's 20th season in early 2016.
The couple then starred on Freeform's Ben & Lauren: Happily Ever After?, which featured Ben calling off their televised wedding due to cold feet, and they later announced their split in May 2017.
While Ben has yet to find love again, Lauren is currently dating Devin Antin, who is still getting used to her constant association with The Bachelor franchise.
"I don't think I gave him enough credit for how hard it is or how hard it was, especially because we did start dating relatively soon after Ben and I went our separate ways, and he was such a champ about it," Lauren told Us.
"He was so supportive, but I know it was hard for him at times to constantly have to hear about my ex and to know I was engaged and all that stuff. That's got to be hard."
Lauren isn't sure whether Devin is "the one" for her yet, but she seems optimistic about their romance.
"I don't know though. Every time I've been in a relationship, I'm like, 'I don't know.' I'm assuming when that time comes, you will know, but I would say right now we're both just enjoying where we're at and trying not to force that," Lauren said.
"I feel like I've already somewhat recently been down that road, so the last thing I want to do is force something or speed things along. I just want things to naturally progress and that's kind of what we're doing."
Lauren apparently views her relationship with Devin as "low key," saying they enjoy doing the simple things in life together.
"We love doing nothing more than like watching Netflix, chilling, going to dinner. Then on the weekends we're definitely social," she revealed.
Lauren believes Devin complements her well, especially because she tends to "get a little anxious at times" but he does not.
"He does not stress," she explained, "so I think he calms me down when I do need to be calmed down and we have the same senses of humor and the same interests and he's very entrepreneurial... He really pushes me to go after things that maybe I wouldn't have or been too nervous or afraid to do in the first place."
Lauren and Devin met on Tinder and briefly got to know each other one year before she appeared onThe Bachelor. Once Lauren moved back to Los Angeles following her breakup with Ben, she and Devin reunited and a flame sparked.