Perna,

it's not that rational though.

have you never felt this all consuming need / want for someone else? Even if they dont show you that they feel the same in return you grab on to any bit of kindness and convince yourself that they feel how you do? That they can do no wrong?

Then they do something, or don't do something, and it's all different. you want nothing to do with them and nothing can convince you that they ever did anything good for you.