Crush-stalk (verb)
When you like someone as a friend, but really LIKE them so you start checking their Facebook, their Instagram, their Twitter, and liking everything. You start your own chapter of their fan club. You crush on them platonically, but more like on a superfriend level. Teeters on obsessive.
I was crush-stalking Hal's Facebook. "HeY! I was crush-stalking you on Facebook and saw you post your love for Lily Tomlin. Sounds like YOU are crush-stalking HER."