Is it possible to have a long term non physical relationship between two es?

I am a mddle aged, married professional guy and enjoy the company (talking and being with them) of persons from opposite who are articulate and intelligent and widely read. I enjoy discussing with them the variety of subjects. Is it normal and does not carry the guilt. Becuase I do get attracted to females (like males) but never gety ually attracted and do not get a desire to go further. Such friendships, how do they evolve in long run and is it OK or is it a betrayal to my wife. I have to conceal this from her because being very suspicious will not understand my logic. Can some body suggest me a site to locate such friends?