Oh, Aaron Carter. The singer used his Twitter feed to pour his heart and soul out, letting fans know that he is still harboring unrequited feelings for his ex, Hilary Duff.

Remember, Carter was the bone of contention between Duff and Lindsay Lohan at the height of his popularity in the early '00s. Everyone in that love triangle moved on, with Duff marrying hockey player Mike Comrie and having his son. Those two split earlier this year and Carter is looking for his in, promising that he will do whatever it takes to win her back.

Below are the singer's tweets about Duff. We're not sure if the singer/actress returns the feelings, but Carter let it be known in the social media space.