I'm going to approach this post in two slightly different styles. First, I'll go for short and sweet:

SHIT HAPPENS.

Whether online or in real life, we all run the risk of having the emotional rug yanked out from underneath us. This brings me to my slightly more flowery version of a response:

we have no choice as to the actions of other people. We cannot make them love us, we cannot make them respect us or keep us safe or tell us the truth. We do, however, have an infinite variety of responses to their actions.

Everything can be taken from a us but one thing, the very last and the only true human freedom - to choose our attitude in any given set of circumstances, to choose our own way. Even when our lives are reduced down to just a single choice in a single moment, that choice is still a universe of possibility. Life is not who loves us, it's who we love and the purity of our own feelings - it's not about who hurt us, or who lied to us, it's about our ability to look upon ourselves with the pride of our own self-imposed honesty and judgment and say, "I felt, I trusted, I loved."

That's why we come back when we've been hurt - because the tragedy is not in the bleeding, the tragedy is giving up.