The rapper headed out of town solo on Wednesday, but before he left Los Angeles, he was spotted packing on the PDA with the reality star outside of his home.
Both were dressed casual when photographers snapped their photos, with Scott in a Michael Jackson hoodie and Jenner in a black pullover with a rose-patterned hood.
Before Scott headed into his vehicle, he said adieu to Jenner with a hug… and a butt grab!
According to an eyewitness, "It was a long goodbye."
"It was a bit serious and sad but Kylie looked very much in love," the eyewitness added. "It was evident that Kylie is very comfortable with Travis."
The eyewitness also told ET that "Kylie was carrying some interesting artwork with her. She recently bought some Barbie artwork for her home and it looks like she is still decorating."