Are bisexual people more likely to cheat?

“Could be attracted to more than one gender” and “wants everyone” are two different claims. Sexual orientation describes the range of people someone can find attractive. Fidelity is a commitment someone makes. These live on entirely different axes. Equating bisexuality with cheating is like saying a person who enjoys both coffee and tea can never finish a cup — catchy, but not an argument.

Taking the logic apart

• A straight person will feel attraction to many different people across a lifetime, yet nobody concludes that heterosexuals are doomed to cheat. The breadth of who you could desire has never determined whether you keep your promises. Bisexuality merely makes this ordinary fact visible.
• Psychology has long described orientation using multiple independent dimensions — who you’re drawn to, who you’ve been with, who appears in your fantasies, who you bond with emotionally (the Klein Grid is exactly this kind of map). Faithfulness has never been one of those dimensions; it’s a different thing altogether. Every orientation contains loyal people and disloyal people; the variable is character, not orientation.
• The “never satisfied” framing also smuggles in a strange premise: that a partner is a configuration, and anything missing from the spec sheet must be sourced elsewhere. People who commit choose a specific person, not a gender checklist.

Who this myth actually hurts

This stereotype does its worst damage inside relationships. Bisexual people routinely face the question “so will you leave me for a man/a woman someday?” — and many respond by hiding their orientation from partners altogether. Not because they are unfaithful, but because they expect to be distrusted. What corrodes a relationship is suspicion, not a partner’s orientation. (The same label-the-group-to-judge-the-person move powers the myth that same-sex relationships are inherently promiscuous.)

For the bi reader — and their partner

• If you’re bisexual: your orientation is not a “risk factor” in a relationship, and you don’t owe anyone extra proof of loyalty just to receive baseline trust.
• If your partner is bisexual: coming out to you was an act of trust — a step that is always the person’s own call, taken when they feel safe, and they took it with you. What’s worth discussing is what you both want from the relationship — the same conversation every couple has.
• For a fuller picture, see our introduction to bisexuality.