Please read my question below and share genuine honest opinion please?

I am married and I recently fell in love with another person who is also married, I have no intention to cheat nor want him to cheat as we both have families and kids so do not want to disturb each other families. I have no bad intentions and accept this as a fact that we can't be together But I badly want the other person to know that he is so close to my heart. Should I tell him this thing? If yes, how and what? Please help me I am not mentally at peace and having sleepless nights.

Please read my question below and share genuine honest opinion please?
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