Urgh! Someone just kill me now

There are those people that you see and smile, those you see and want to cry. You see some people, and they warm your heart, then others, who will break it. But you know which people are the worst to see? The ones that manage to evoke mixed emotions. You see them and you want to love them, and hurt them at the same time, because that's exactly what they did to you! Guess which type of person I saw today...