Stuck between a rock and a hard place

I'm a married woman- at the moment I can't say I'm entirely happy but we do love each other very much. I went to college with this guy and in Freshman year, we almost kissed but we held back because we were both in relationships. It's now 6 years down the line and we got to talking. Turns out he's been into me from day 1. I have felt that way about him too, only I just thought it was unreciprocated. Now I can't stop thinking about it. I would never hurt my wife (I'm bi) but can I just sit on my feelings and pretend they don't exist. No judging please- I haven't done anything with this person and would never cheat on my wife. Thx.