I'm thinking about this at the moment because I have one-way feelings for someone I work with and it's getting to the stage where I would just rather start afresh somewhere else than spend my working days feeling shitty. I know the usual options would be a) tell him how I feel (I can't do that because he's married and is also my boss), or b) just act professionally and wait until the feelings pass (it's been nearly three years now and no signs of it going away). I'm not really looking for advice, but would be interested to know if anyone else left for a new job because of this sort of situation. Did it work out for you?