Scott Disick, 37, and Amelia Gray Hamlin, 19, make romance official ahead of Valentine's Day

Scott Disick, 37, shows off new platinum blonde hairdo amid romance with Amelia Hamlin, 19

Delilah Belle Hamlin packs on the PDA with boyfriend Eyal Booker during coffee run in West Hollywood

Scott Disick, 37, Rocks Blonde Makeover As He Holds Hands With Model Amelia Hamlin, 19, In Miami