ah, ok, this is about your partner.
All the more reason to NOT have it out on a public forum!
Is your partner lying? Or are they telling things from their pov?
For example, my husband used to go out, get pissed, turn off his phone.
I was very distressed about it. I truly believed he was doing it because he didn't want to be with me.
He truly felt I was trying to control him and claimed that turning off his phone was to stop me from screaming abuse at him.
our feelings about the same event were totally different. Our views of the same event contradicted each other. Because they were from different viewpoints. Not because either of us were lying.
Now, if you are saying that your partner is claiming that you slapped them across the face with a kipper and that never happened, then fair enough. But if they are saying that an event happened and it did but you don't feel that motivations or whatever were as described, that's not a lie but a matter of perspective.
But it's really hard to say because of course, we don't know what thread you're on about or anything.
Please don't bring your argument on here. It would be unhelpful for you both.
talk to your partner.
Listen to them too.