I'm going to say that I think a lot of people have the same experience. There has always been someone in your life, no matter how long, that you forget about for a little bit, and then they're back in your life like a year later. You don't know how to feel about it, you don't know what kind of relationship you have with them - whether you want one or not, and you don't know if this is the last time you're going to see them. It sucks, sorta, but mainly confusing.