need help on this poem. please and thank you

As the night grew darker,

The moon rose from the clouds.

The knight riding his horse,

looking somewhere to stay.

Abandoned by the castle he,

once protected and held dearly.

The knight had fallen for her,

the princess of the castle.

A forbiden love,

never to have happened.

At times it seemed,

that it would work out.

It never did,

she loved someone else.

He loved her with a passion, 

until his heart was broken.

He was banished by the person,

he really loved and cared for.

Leaving on his way,

to find his own reason.

Yet it hurts more,

than any battle he's been in.

Nothing brings him more pain,

that to know what she did.

Slowly he looked for a place,

to call his own.

Under the light of the moon,

he died lonely and broken.

I would say the rhythm is good, but add some rhyme scheme! It will make it flow better. The ending I like, for it is unexpected. The poem itself I feel needs more voice. I didn't feel anything. I'm only picking out the tiny flaws, because it is a great poem! keep up the good work.

I didn't get any feeling either, it read like a narrative just broken into verses.  There is promise here, I'm not a pro but what about something like this...?

Darker grew the night

from the clouds arose the moon

Riding his steed came the knight

searching for rest, a room

I hope that helps some, put the harder or predictable words to rhyme in the sentence instead of the end.

Let me try. The first stanza is bland. Try repositioning the words for fuller effect. Such as

Dark grows the night

Moon rising from hte clouds

Weary knight riding his horse

Looking for somewhere to stay

As the night grew darker,

The moon rose from the clouds.

The knight riding his horse, (Here you mix tenses you have already set)

looking somewhere to stay.

 Once fallen ; forbidden love

Princess once protected

loved her tenderly

Now broken, now abandoned by she

Abandoned by the castle he,

once protected and held dearly.

The knight had fallen for her,

the princess of the castle.

A forbiden love,

never to have happened.

 He dream' ed dreams

She lied the lies,

Moments lost in  reverie

Of things that would never be

for a lover, who loved not he.

At times it seemed,

that it would work out.

It never did,

she loved someone else.

He loved her with a passion, 

until his heart was broken.

 Passion burning

fever of love never returning

Lovely princess banishing from her sight

So lost before, so  much more so now

His sanity now in question.

He was banished by the person,

he really loved and cared for.

Leaving on his way,

to find his own reason.

Yet it hurts more,

than any battle he's been in.

 No battle yet fought

No panacea sought

Can quell the pain

Of his broken spirit.

Although I rewrote this, I did so to make a point. Choose only the best words. Throw out all "dressing" words. Get to the "heart" of your thoughts. Boil it down.  The fewer the words, the better the poem. (I have lived this poem many times over. I can relate. My rewrite was not intended to be very good - just to make a point.  Your poem is too wordy and unfocused.

Nothing brings him more pain,

that to know what she did.

Slowly he looked for a place,

to call his own.

Under the light of the moon,

he died lonely and broken.

from childhood's hour I have not been As others were - I have not seen

As others saw - i could not bring My passions from a common spring

(from Alone - Edgar Allan Poe)