First of all, "ment" should be "meant." Just a little spelling thing, that's all.
This seems like you're trying to hard for the rhyme and not enough for the poem. Throw away the rhyming aspect for just a moment and focus instead on what your heart tells you. How does it want to express itself?
You're talking about loneliness, so you're going to want to talk about what specific event makes you feel shut out and so on. Make us see the picture instead of just telling us you feel shut out. Otherwise, we don't connect very well to the poem.
Hope that helped!
Ubi caritas est vera, Deus ibi est.
"The mark of your ignorance is the depth of your belief in injustice and tragedy. What the caterpillar calls the end of the world, the Master calls the butterfly." ~ Richard Bach
Yeh, a peom doesn't have to rhyme, and by making it do that you are ruining the whole meaning of the poem. Relax a little and just the the poetry flow.
Another little thing is your spelling and grammar. They could be adjusted a little to make it more readable. On some of the sentences you have capital letters at the beginning, but not on all of them, is this intentional?