5. Aquarius
Aquarius people have a reputation for infidelity due to their gregarious nature and extensive social circle. The con artist in them could take pleasure in throwing others off their scent.
People born under the rule of Uranus aren’t really physically unfaithful, but they might start sending private messages to an ex or playing hard to get in order to get some free drinks with a new someone.
Even if there is never any physical adultery, their partner probably wouldn’t be too pleased to learn of their mental infidelity.
…Do you consider infidelity when there’s some physical action involved, or do you think that talking with someone behind the partner’s back is cheating too?