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9 red flags that may expose cheater early in relationship

Tue, July 14, 2026 - 11:31
4 min
Learn how to spot infidelity
9 red flags that may expose cheater early in relationship How to tell if someone may be prone to cheating (photo: Magnific)
It's easy to overlook warning signs at the beginning of a relationship, as attraction often leads people to idealize a new partner. However, psychologists say certain behaviors may indicate that someone isn't ready for an honest, committed relationship.

Your Tango explains which red flags may suggest a person is more likely to be unfaithful.

They give vague explanations

If someone frequently can't clearly explain where they've been, who they were with, or why they suddenly became unavailable, it's worth paying attention. Consistently vague answers, avoidance of specifics, or strange excuses may signal a reluctance to be honest.

Your first impression may be right

Psychologists say you shouldn't ignore your intuition. If you sense dishonesty or insincerity from the start, take a closer look at the person's behavior. At the same time, experts stress that you shouldn't judge someone based on appearance alone. Their actions, consistency, and the way they treat others matter much more.

They constantly check out other people

In the early stages of a relationship, most people naturally focus on their partner. If someone openly flirts with others, constantly stares at attractive strangers, or is easily distracted by potential romantic interests, it could be a warning sign. According to psychologists, this behavior often reflects a constant need for novelty, excitement, and attention.

They charm everyone too quickly

Being charismatic isn't a flaw. However, if someone showers people with compliments, effortlessly wins everyone over, but shows little empathy for others' feelings, it's worth being cautious. Such people can be incredibly attractive at first, but often prioritize their own desires over their partner's emotions and struggle to admit when they're wrong.

They have problems with alcohol

Research suggests that serious self-control issues can increase the likelihood of impulsive behavior, including in relationships. This doesn't mean everyone who drinks alcohol will cheat. However, frequent binge drinking or regularly losing control may be an additional risk factor.

They're overly protective of their phone

If your partner constantly hides their phone, quickly locks the screen, leaves the room to answer calls, or becomes anxious when someone accidentally sees their messages, it may raise questions. This is especially true if the behavior appears without an obvious reason and is accompanied by other unusual changes.

They keep saying monogamy isn't for everyone

Sometimes people openly reveal their views on fidelity. If your partner regularly says cheating is "normal," argues that monogamy is unnatural, or frequently defends people who cheat, it's worth asking whether your values truly align. Psychologists note that a person's beliefs about relationships often influence their real-life behavior.

They act out of unresolved hurt

Someone who hasn't healed from past betrayals or painful breakups may carry those emotional wounds into a new relationship. They may constantly expect to be betrayed, seek revenge for past experiences, or assume every partner will hurt them. Unresolved emotions like these can seriously damage trust and healthy relationships.

Their stories keep changing

If your partner's stories frequently contradict one another, details constantly change, or their explanations sound different each time, it may be another red flag. Psychologists recommend focusing not on isolated incidents but on recurring patterns of behavior. Looking at the overall pattern can help you better understand someone's character early in the relationship.

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