The phrase "wandering eye" is an idiomatic expression that refers to a person who has a tendency to look at or notice other people, often in a way that may be interpreted as flirtatious or disinterested in their current relationship. Full definition
When talking about the issue of wandering eyes, people seem to have two general responses. (thespruce.com)
Casual shots with friends also don't hurt, but be aware that men are visual and may have wandering eyes for your good - looking friends. (cupidspulse.com)
Another positive is the site's minimalist design prevents wandering eyes from getting distracted. (datingadvice.com)