I'll try to keep this short:
I'm 27 soon to be 28 M, she's 30 F. We met in college 7 years ago and we became very good friends. Feelings for her soon developed. However she was in a relationship at the time so I kept it friendly with her for awhile. I eventually moved on from liking her and started dating someone else but we kept in touch. I broke up with my gf and found out this girl was single. Didn't last long as another guy came in and they started dating before I could make a move. I still kept in touch with her. Anyhow I just found she and her bf of 3 years just broke up over the holidays. I don't want to make the same mistake as last time where I waited too long. How long should I wait before telling her how I really feel about her?
TL;DR: Girl I've liked since college is single again. How soon should I tell her I like her?