It's interesting.

It's interesting how I can invest nine months of my life in him-- give up a whole day helping him with a paper he put off, go to all of his home swim meets, quiz him on anatomy and physiology, meet his family, be there to listen to him and talk to him-- and then suddenly we don't even make eye contact or say hello when we cross paths so close to each other that we nearly run into each other.

It's like I know him less now than when we started going out.