I discovered people will force whatever belief they want into the situation of vows. I'll give you an example of a situation I had to deal with. A man who claims to be a Christian(!) and who was not present when I married my first wife challenged me about the vows I "likely" said. He rebuked me for breaking my vows for a monogamous marriage even though I told him I never said any such thing. His response was to claim I'd made the vow in the context of those who believe in monogamy-only, so it applied to me. He went on to tell multiple people I was committing adultery and did his utmost to persuade my wives to divorce me. I confronted him over his sin of bearing false witness against me and breaking God's commandment which he ignored.
Until people set aside their erroneous presuppositions about monogamy-only and think biblically they won't act righteously. The thing is, we answer to the One who made the rules, not the religious self-righteous clowns. We need to stand blameless before Him, and that includes dealing with any vows we've made.