Sofia Richie Has Made 'A Big Impact' On Scott Disick — 'Nobody Notices The Age Difference'

Imagine being so irresponsible, a 19-year-old keeps you grounded.
Sounds like Scott Disick and Sofia Richie are still going strong -- in fact, apparently no one notices their age difference! We're not sure if that says more about him or about her...
Related: Scott Confesses His Love For Kourtney Kardashian After KUWTK Argument!
Anyway, sources tell People the 34-year-old and the model are "very serious":"She's been great for him. She's made a big impact on his life and hasn't partied at all sinc