You can obsess and obsess over how things ended- what you did wrong or could have done differently- but there's not much of a point. It's not like it'll change anything. So really, why worry?
News flash, Bozo. Don't ever tell a girl to relax. It only makes us madder.
War is sweet to those who have never fought
For the record, I would like to point out that it is NOT being obsessive to memorize a boy's schedule so that you can accidentally bump into him. It is called being efficient.