You told WHO how you feel?
Your husband or your "first" love?
Honesty is great, but I hope you didn't tell your husband and I'm wondering why you would tell the other guy after being married for almost 4 years.
Feelings are true and valid, but have you considered that you might be unduly idealizing things? Perhaps you are remembering things as being a little more great than they actually were?
Sure....life was different then. No child, no husband.
Would you really trade what you have NOW to go backwards?
Honey, let's face it. After 4 years of living with your "first love" and seeing him for all his imperfections on a daily basis and doing his laundry and smelling his morning breath, he probably wouldn't be looking all that great right about now either.
Very, VERY few of us go on to build families and lives with the very first person we fell in love with. It's okay to say to yourself, "I will always feel love for that person. What a wonderful part of my life. Like so many other things, I wouldn't be the person I am today if I hadn't experienced any of that. I can be thankful that it's part of what brought me to where I am now in my life and that I've moved so far beyond it."
Please don't let memories of an unfettered past romance hinder you from seeing the beauty of the investment you have in your family now.
Don't do anything you might regret.
Just my opinion and best wishes.