If a married man admits his attraction to a woman who is not his spouse, is it a form of betrayal to his wife?

He is admitting this to you, his wife? I would think it really depends on what you are defining as attraction: physical/ual? mentally intrigued? And it would also depend on how open you really are with these things in your relationship. Some couples I know are very open about this, secure in their relationship and knowing that we are all still attracted to others from time to time, but it is fleeting and goes in and out of our heads and is not acted upon. This is only human- whether you choose to SHARE these thoughts is up to each individual couple. However, if this attraction is being disclosed relevant to one isolated woman whom he thinks about and is not just fleeting, I would still not call it betrayal but possibly betrayal in the works. Again, I'm not sure of the purpose of admitting this attraction, or what it means to him, so I don't want you to worry for nothing. If anything, admitting attraction is a good sign that he does tell you things as soon as it even a little disloyal, making me think he feels bad about even that so wouldn't act on the attraction.