First I must ask: Why does it say Sample at the top of the poem? Is this not the whole thing? Please say it isn't and that the whole poem includes a happy ending.

Okay, here are my comments. It's a great poem! I don't usually like to read sad things, because they make me sad. Having said that I must applaud your work. There are a number of wonderful phrases here.

You comfortable liar.

This is a very good, understated line. It contrasts with the overstated emotions throughout the rest of the poem and thus really grabs attention. It is also the only stab that the victim takes at the false friend. The only retaliation. And even that sounds so plaintive. The writer seems to be truly astonished at the actions of the betrayer.

It left me feeling that I'd like to meet this false friend, and do something unkind to them for you. (SangMing's mother instinct kicks in. Beware.)

Just keep swimming!