Married men, be honest here

(M38) I've been married for 15 years. We met when we were 20 and have basically been together ever since. In all that time, I’ve never been with another woman. I’ve always had a healthy imagination though, I watch porn, masturbate, all that, and it’s never been a problem or interfered with my marriage.

Lately, I’ve been feeling this strong urge to sleep with someone else. I’ve actually been thinking about paying for a session with a sex worker, kind of like a “gift” to myself. I’m not interested in starting anything emotional or long-term with another woman, that would just stress me out and feel wrong. But the idea of doing something purely physical and professional, like getting a massage, feels like it could scratch that itch without all the emotional mess or guilt that would come with an affair.

For context, I’ve been sleeping with the same person for 15 years. When I first started being sexually active, I was already in this relationship, so I was basically a virgin when we got together.

Has anyone else ever felt this way or been in this situation?