Not true. Girlfriends also have this Aura. It makes them very attractive indeed. I think it is less to do with the actual presence or knowledge of the other party, but more to do with the balance and peace lent by the knowledge that they are in a good relationship. People who are going out with someone and are comfortable, radiate confidence, and ease, and that is very attractive.

It is often hard to distract yourself with the fact that this person is probably this attractive cos they already have a boyfriend/husband/lesbian lover/significant other... This leads to the phrase the good ones are already taken. Or if they aren't yet, they will be by the time you notice them. Sigh...