I could have been easier on you
I could have treated you more kindly and done more to make things easier for you.

I could have been all you held on to
I could have been the one constant, supportive person in your life that you relied on to stay grounded.

I know I wasn't fair
I realize that I didn't treat you as well as I should have and that I acted in ways that were unjust or unkind.

I tried my best to care
Even though my efforts weren't always successful, I did make an effort to care for you and do what I could to make things work.

About you
As in, I tried my best to care about you and your needs.

I know I could have been a better man
I recognize that I have flaws and areas where I need to improve as a person.

I always had to have the upper hand
I had a tendency to need to be in control and to exert my dominance over others, which wasn't always healthy or helpful.

I'm struggling to see
I'm having a hard time understanding or accepting.

The better side of me
The part of me that is kind, loving, and understanding rather than selfish, controlling, or manipulative.

But I can't
Despite my efforts or desire to do so, I'm unable to.

Take all your jabs and taunts
I can't handle all the negative things you say to/about me, which feel like verbal jabs or taunts.

You're pointing out
You're highlighting or bringing attention to.

My every fault
All of the flaws or mistakes I've made in our relationship, which you're making me feel bad about or guilty for.

And you wonder why I walked away
It's not hard to understand why I decided to end things given how critical and negative you were towards me, even when I was trying my best.

When you tell me I'm a wreck
When you criticize or insult me by telling me that I'm a mess or a disaster.

You say that I'm a mess
You're making me feel like I'm broken, unstable, or unsteady as a person.

How could you expect anything less
Given how critical and negative you are towards me, it's not surprising that you would think so poorly of me.

You latched onto me
You attached yourself to me or relied heavily on me.

Then cried I strung you along
Then you accused me of leading you on or giving you false hope.

I told you when you asked
I was honest with you when you directly asked me about our relationship or its longevity.

I knew this wouldn't last
I was aware from the beginning that our relationship wasn't likely to succeed long-term due to our differences or issues.

At least I could be honest about that
Even though it may have been painful or uncomfortable, I didn't want to lie to you or lead you on by pretending that things were different than they were.

And now you're tellin' everyone
You're spreading negative rumors or gossip about me to others.

How I only did you wrong
You're framing our relationship as one-sided, where I was only in the wrong and you were the victim.

Still I see you standing there
Even though we've ended things, you're still around or trying to remain in my life.

Waiting round for me to fall
Hoping or expecting that I'll fail or have problems that you can criticize me for.

Girl you must be crazy
To keep obsessing over me or expecting me to be the person you want me to be even though we're no longer in a relationship.

Still believing you and me belong
Desperately trying to hold onto the idea of us as a couple, even though it's clear that we weren't meant to be together.

I guess you never knew me at all
Describing the realization that the other person never truly understood or saw the speaker for who they were as a person.