Scott Disick and Amelia Gray Hamlin! The pair, who were first linked in November, are getting more serious. «Amelia and Scott are doing well,» a source tells ET of the 19-year-old model and the 37-year-old businessman. «Amelia is mature for her age, and Scott and her [get] along great and things are easy.» The romance is even more meaningful because it marks Amelia's «first serious boyfriend.»«She's really into him,» the source adds.