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bpforever1, I personally think you should make other friendships besides one you have with a married man, but I understand it's not so easy to just make friends, especially during a pandemic and when friendships are not instantly created. You didn't answer the question about whether his wife would be OK in knowing you two are in touch and have been involved emotionally online for a year, or whether they have some sort of open marriage arrangement.
IF they do NOT have an open marriage and IF his wife would be hurt by what is going on, then it's dangerous territory that you're stepping in. Also, if they have children, this kind of thing is devastating to a wife and the entire family, even when no sex is involved.