"Not that I'm against it, [but] I'm just very private," Sofia told Us on Thursday while celebrating Valentine's Day with Scott, 35, at the Sugar Factory American Brasserie inside the Theater Box in San Diego, CA.
But Keeping Up with the Kardashians is not Scott's only reality TV project right now, as the businessman is also working on a new E! reality series about flipping houses.
When asked whether Sofia will participate in Scott's new televised venture, Sofia admitted to the magazine, "Oh, God no."
"He's the expert," Sofia said of Kourtney Kardashian's ex. "I might put in my two cents, but he's the expert."
And Scott insisted he's perfectly okay with Sofia choosing to stay out of the spotlight.
"Everyone has their own choices and nobody should have to do anything they don't want to do... It's her choice," Scott explained.
The model and Scott, a father of three, were first spotted together in May 2017.
It took time for fans to take the couple's relationship seriously given their age gap and Scott's longtime efforts to make things work with Kourtney, but a source revealed last month the romance is anything but fleeting.
In fact, a source insisted Scott and Sofia are "extremely serious" about each other, although they are not rushing to get married.
"It's more likely that she gets pregnant before they get engaged," the insider told Us.
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If the pair were to move in that direction, however, they'd apparently have Kourtney's blessing.
"[I'd say] congratulations," Kourtney, 39, reportedly said on Watch What Happens Live With Andy Cohen when asked how she would react if Scott and Sofia got engaged.
Kourtney reportedly added there is no tension between Sofia and the famous Kardashian family.
"It's all good," Kourtney said on the talk show, according to the magazine, adding that they've vacationed together in the past.
Kourtney and Scott dated on and off for nine years before calling it quits on their relationship for good in July 2015. The exes share three children together: Mason, 9, Penelope, 6, and Reign, 4.