It can be not some -ism. It's just a person who want to think so and probably he/she has some benefits from this ideas. The same time you do have some ideas too. Your idea is that his/her idea it's not true.
"What is the true?" it's an open question. The best answer, I gues, is: the truth is - love. But, exactly love, not passion.
So, it's his chose - to choose any variant of love. Because the opposite will be not so good - our freedom can't violate the freedom of other person.
If you will have some questions, you are welcom in Skype psycological-session.
Best.