Deep Connection with guy friend....?

I am happily married with many friends. Within the last couple months a friend introduced me to their friend and we immediately hit it off. We have fun together, keep it platonic ect. I do however find him extremely attractive. He and I have so many uncanny similarities and we have formed a close friendship. The other day he mentioned he has a really deep connection with me, more than he has ever felt with anyone else. Should I be worried? He had always kept it professional and knows I'm married.....