Disick took 8-year-old Mason to the movies in Calabasas, Calif., on Feb. 19.
The reality dad, 34, and teen model have been dating for around nine months.
"She's 19," Lionel said about his daughter's relationship in a recent interview. "When you're 19 you know everything."
"I'm going to stand real still in the corner, get me a good drink and not make too much noise," he added.
Lionel has tried to not act to concerned about Disick's background, though he hinted he had some misgivings. "When you hang around the reality world, who knows what you are really doing? This is a well-oiled machine, the Kardashian machine," he said. "I don't really know what to think."
Do you think Scott and Sofia will last a year together, or is her absence on his outing a sign of things to come? Weigh in with your thoughts in the comments.
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