Not necessarily. Saying "I will never cheat" indicates a commitment to remain faithful and not engage in infidelity in the future. It doesn't necessarily imply anything about the person's past behavior.
People can make promises about their future actions based on their values, principles, and intentions. Even if someone has made mistakes in the past and engaged in cheating, they may still genuinely mean their statement about not wanting to cheat in the future. The declaration could be a reflection of personal growth, a desire to change, or a commitment to be a better partner moving forward.
On the other hand, some people may use such a statement to conceal their past actions or manipulate others into trusting them. It's important to consider a person's overall behavior, honesty, and trustworthiness rather than relying solely on their words.
Ultimately, trust in a relationship is built over time through consistent actions and open communication. If someone has a history of cheating, it's essential for them to address those issues and work on rebuilding trust with their partner. It's also crucial for both partners to maintain open and honest communication about their feelings and expectations regarding fidelity in the relationship.