I made the mistake of getting feelings for a coworker and telling her about it when we were out at a bar.  She rejected me and is now hooking up with another coworker.   Never again will I get feelings for a coworker and act on them.

It's been 3 months and still hurts because I have to see her everyday.  How long does something like this bother most 'normal' people.  I'm wondering if I need professional help