Wow! That's one possible explanation. But he might also use (or have used in the past) a service-provider that automatically adds addresses to the mailbox. He might be on a mailing group for therapists, and it might be all quite innocent and professional. Like, Ms. Puckerup writes to the psychologists' list and makes a post. Your T just discards her post as junk mail, not realizing that his service provider's programming has already added her to his address book. And maybe he gets the virus that way too, from proper professional conduct gone wrong--virus inside what he thinks is professional email.

I'd ask him about it. See what he says. Another thought: He might have gone to the site to do some research if he has another client who is tortured with his infatuation with this babe, to see what it is really all about.

I saw recently that a TV talk show was doing a show on porn and the boom it's having, that many happily married men are accessing it online instead of being with their wives. Worth asking your T what is going on. You can assess how he answers the question and see if you are comfortable with him after that.