What is love?

Recently I've felt like I lost a lot of friends, maybe due to the assistance or the busy schedule and all but most of all I realized despite I lost some, a few others became closer even with the distance, we would talk more, share more, laugh at silly jokes not considering the face that we only had to see each other through phone screens, it still felt even more amazing than being together...

This made me start thinking if it could possibly mean I actually have friends I love more than others, but what exactly does it mean to love from a friendship perspective??