According to National Geographic, the planet Mars is visible without a telescope on many clear nights. The planets Jupiter, Mercury, Venus and Saturn are also viewable without the aid of magnification.
Emotional cheaters usually feel zero guilt for their extramarital relationship. But that is the very definition of emotional infidelity, and the word infidelity is used to describe this type of relationship for a reason... It breaches the bonds of marriage. Even if the body remains monogamous, the heart does not.
Limerance is why emotional cheating leads to a physical affair at least 50% of the time... The other 50% of the time is when the cheater gets caught! This also explains why your wife will not want to give up her relationship with the other man.