If someone had a crush on you for 25 years would you want to know?

I've really fancied my co worker since I started in the job. He was always married and I have been married for 10 years. He is retiring. I'm tempted to tell him. I don't want an affair... Just to make him feel nice, maybe get a kiss? Haha I don't know.... I just think I would like to know if it were the other way around (ego!!!). Bad move?? 😃