He looks pretty down in the dumps!

Scott Disick hit the Calabasas mall yesterday, and for the first time in forever, girlfriend Sofia Richie wasn't with him. Did they break up? We wouldn't be surprised if there's some serious tension in their relationship, given that her dad Lionel recently said the reality star bad boy was basically his worst nightmare!

"He thinks Scott is the worst person she could ever see and that he raised her better than that. He thinks she should have more respect for herself as a young woman. Lionel knows Scott’s playboy ways and he doesn’t want to see his daughter get hurt," a source dished to People.

The legendary singer has reason to worry, too!

"Sofia is much more invested in the relationship than Scott. Scott isn’t treating this as a long-term relationship whatsoever. He is just having fun. Sofia wanted commitment from him, so he committed to be her ‘boyfriend,'" the source added.

Apparently, The Lord isn't into being a one-woman man, and is still hung up on Kourtney Kardashian and flirting with other chicks.

"He still has Kourtney at the top of his mind all the time, and he is still texting and flirting with other girls. Sofia is very young and naive and doesn’t know what she’s in for. She feels like she’s in the in-crowd right now and loves that Scott has swagger and money and that he loves to travel and party," the insider revealed.

We've already prepped their split announcement!