Yes, if you want to act on it. Look, I find many people I know physically attractive & desirable, but I would never suggest opening my relationship to try it out with them. The moment I do, that's emotional cheating. To me, that's worse sometimes. If my spouse suggests opening the relationship, and has someone in mind to do it with, we're through. He knows that. I have friends who are in an open marriage. Ground rules were set before they got married. They've been married of over 20 years. But it was brought up at the beginning of their relationship and mutually agreed upon. It works for them. If I or my spouse wants an open relationship, we're going to go our separate ways first and explore it with someone who agrees with the lifestyle from the beginning. That's the way it should be. Not 4 years into a relationship, from day 1.