1. in a more sorrowful tone, saying this will sound more like "You left me here. Come back. Back to me."
2. in a more angry tone, saying this will make you sound like the
guy singing 'finger eleven - Paralyzer'
3.
something you say to someone, be it a text, call or a conversation. Mostly signals that you are expecting them to do something, that something can be anything
4. A weirdly romantic sounding version of "I'll wait for you"