I kissed a younger guy and im married

Im married to an amazing guy and we have 4 kids, as time went by ive gained weight and feel like my husband is less affectionate to me. He doesnt kiss or compliment me, however he treats me extremely well and we only do the deed if i initiate it.

Fast forward a few weeks ago i went out with my friends and i met this younger guy at the bar, he was a few years younger but boy was he handsome and charming. He said the nicest things to me and we kissed. I guess he just made me feel sexy again. As i was with women who were better built than me and yet he chose me, kept buying me drinks and the conversation flowed.

I feel so guilty i know it was wrong, i guess im posting this for advice. Or to hear if anyone been in the same situation.
Pls be nice