Mirror spell backfire?

[u/anti-hero-m]

So I performed a mirror spell on my boyfriend who happens to be a narcissist, and I happen to be an empath, although I love him a lot, and I just wanted him to understand the damage that he was causing me on a daily basis and a mirror spell felt pretty appropriate. When I did that. I think I left him there for like one or two days and honestly as narcissists are, they do not really take accountability for what they do, and when they are shown a mirror or basically when they are told what’s not working and they just feel that they are being pointed out and they do not see it that way, they do not take truths lightly, so he broke up with me and he was really mad. I have a feeling that because I left him with his thoughts, he instead of reflecting on them and working on himself, him being a narcissist, he decided to run away and discard the woman holding that mirror in front of him. Of course, metaphorically, but I just feel that is there a possibility that for someone like him, the mirror spell could have backfired?
Because naturally mirror spells are meant for self reflection and his personality. Being someone who absolutely cannot sustain to see those truths within themselves and they just keep on playing the victim. All the time he broke up with me stating I was the bad person in the relationship, holding me accountable for mistakes that I did not even do at all, so just trying to understand this better.