I have been dating two men for about 4 years and they don't know about each other and now they both want to get serious and now I to have to pick one.
Why would you see two people at the same time for so long?
I couldn't decide between them, now I know I prefer the second one .
It's good that you finally decided to date one of them exclusively. I hope it will work out well with your partner.
I hope it all goes over well.
Dating 2 people at the same time would be very risky if you ever got caught. It seems like you are ready to stick to seeing just one, so I'm glad that part of your relationship is over. If you love them, be loyal to them exclusively.