Natashaaaa. My darling, dear, sweetheart. My heart breaks if this is true. But, if it is not, this is still a fantastic write.
You said we'd be forever.
When I needed you the most,
You decided to leave me.
You were nowhere to be found.
^At first, reading the first line, I thought it was going to be one of those whiney, come back to me pieces that are just overly-written. Then I remembered, yeah no. Everything she writes always has something more to it. It's never typical. I like this stanza because it doesn't scream desperation. It just whispers "loss" and "abandonment." Which was funny because the next stanza includes the word abandon. Your English is so good, I never knew it was one of your second languages. The wording is great.
You abandoned me to this;
Your vows means nothing now.
^There's either a typo, or just a general grammar error hear. The second line could either be "Your vows mean nothing now." (plural) or "Your vow means nothing now." (singular) Either way, it would be a powerful line. Just a little correction, lovey. :)
I will always love you. But,
You are dreadfully amiss
If you think I'd want you back.
Because you know what -
I don't miss you anymore.
^This is a good close. The last line screams triumph, power, overcome, strength. The speaker isn't just a clingy girl. She's a strong woman who knows that it isn't worth anything to miss this guy, and that she, above all, her well-being and mental stability, is more important.
One more critique: The 3rd line mentioned first letter needs to be lowercase. That was hard to read, because it looked like a new sentence, and I re-read it and I see that it's an on-going sentence.
Beside that, this poem is gorgeous. I would even put it in the inspirational category if there were two categories you could put it in.
As always, fantastic writing. Strong piece, sweetheart!