Others don’t understand?

Does anyone have a relationship, that others don’t understand like “their toxic for each other”, or “they don’t go together”, “their too different”, “you shouldn’t be together” etc..

I have a relationship that others would probably call “toxic”. like we understand each other, to us we go together, we’re almost one person. We’ve obviously have had problems. But we both get through it and the connections becomes deeper..

Is anyone in this type of relationship? Have you been in one like it?