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 change! We’re not sure if that says more about him or about her…

Related: Scott Admits His Adoration For Kourtney Kardashian After KUWTK Argument !

Anyway, sources tell People the 34 -year-old and the framework are “very serious” 😛 TAGEND

“She’s been great for him. She’s made a big impact on his life and hasn’t partied at all since they met.”

The insider went on with more detailed information, saying:

“They’ve been traveling together to Mexico, New York and Venice and merely hanging out. His friends adore her and nobody notices the age difference. She is very mature, she grew up in Hollywood and has always been in older situations. They seem really happy.”

Huh.

Do U think Scott and Sofia are in it for the long haul ??

SOUND OFF in the comments( below )!

[ Image via Instagram .]