I would take out 'the' before 'solitude' & 'filthy streets', not really needed!

As for the meaning of the poem, it's excellent. I liked how you personified yourself as a wolf, it would have been more interesting however to not directly compare yourself to something yet leave it up to the reader to interpret your metaphor on their own, but I'm not saying it was a bad idea the way you did it. The idea of the peaceful cave definitely emphasizes that you're protective of yourself when it comes to being with someone, I would suppose that's only because you wish not to be hurt, which is a very common feeling. The bit at the end of the first stanza also emphasized the protection idea quite nicely.

The ending was truly powerful and I think really said what you were trying to say in the first stanza, yet simply stated. Loved the curiosity in your voice. Lovely little piece.

I love the topic, and i like the way you say little, but express so much. And your poems is some times like a puzzle, gotta put the pieces together, love it lol....