We mean, they've even made it Instagram official...
Although sister Nicole Richie doesn't necessarily approve, she has decided to stay out of it.
But what about Sofia's dad, Lionel?
“Have I been in shock?! I'm the dad, come on,” Lionel Richie told Us Weekly on Wednesday. "I’m scared to death, are you kidding me?” he added, when he was asked if he was happy about their relationship.
But we don't think any family member can get in the way of the two right now.
"They are inseparable right now and not leaving each other's side," a source told E! News recently. "Scott is totally romancing her and she is under his spell."
Love is love...