Does this count as belittling?

Let’s say hypothetically you were in a relationship with someone who lied constantly and did many bad things to you and one day you lose it, get into an argument and call that person on all the things that he or she has done and tell him or her that they’re an asshole and a compulsive liar and an immature person for doing all these things to you.
Fast forward you break up and this person tells you and everyone it’s because you belittled them.
Does it count as belittling if that person purposely does hurtful and dishonest things and all the stuff you said to this person is true?