However, after Lionel reportedly spent the Thanksgiving holiday with his daughter and her boyfriend, he seems to be warming to their relationship and giving Scott a chance.
"Scott and Sofia are still together and all is well for now. They spent Thanksgiving with Lionel Richie, and they all flew together on his private jet for their holiday trip," the source added.
For Lionel, his relationship with Sofia comes first, so he's putting his own feelings about the matter aside.
"He is a really honest, up front kind of guy and feels like his father-daughter relationship with Sofia is more important than anything so he's trying to be there for Sofia and to be supportive of her despite his reservations about her relationship," E!'s source said.
The couple's 15-year age gap doesn't seem to have posed a problem for them, and perhaps Lionel is finally now accepting their relationship for what it is.
"They all had a really great holiday together though and progress is for sure being made between Lionel and Scott," the source added.
It's certainly progress after the 'Hello' singer was quoted in 2017 when the pair first began dating as saying that it wouldn't last.
"She's 19," he told the Daily Telegraph.
"When you're 19 you know everything. Is it going to be for life? I don't know. But for right now it's just a phase and I'm going to stand real still in the corner, get me a good drink, and not make too much noise."