My best friend and I have the same crush on the same guy! HELP!! PLLZZ!!!?

hes definately flirting with you, which means he must be somewhat interested in you. being 17, i only flirt with girls who I am interested in or who I might want to be in a relationship with. some girls i dont flirt with at all and they're hot and its just because they're not my type and im not interested. so yeah its a good sign that he likes you.