Thirsty Stalker
A person who is stalking someone via social media or in real life in the hopes of getting more information about the person so they can get with them.
Grace: I saw Emily flirting sooooo hard with Miguel this morning!
Irene: Omg I saw her on his Facebook earlier! She's such a Thirsty Stalker!!!
Irene: Omg I saw her on his Facebook earlier! She's such a Thirsty Stalker!!!