Short answer: no, Pisces aren't "natural cheaters." Astrology describes tendencies, not destiny. Many Pisces are deeply loyal, empathetic, and conflict-averse. If you're worried because you've been hurt before, that concern is valid. Cheating comes down to personal choices, boundaries, and the quality of the relationship—not sun signs. Focus on communication, compatibility, and shared values rather than stereotypes.
If your partner is Pisces, watch patterns, not poetry. Their sensitivity and escapist streak can blur boundaries when problems go unspoken. Set clear expectations, agree on transparency, and name deal-breakers early. Invite emotional check-ins and notice consistency over time. If something feels off, ask direct questions and trust observable behavior. Whether you stay or go, choose based on evidence and your well-being.