This really reminds me of one of those secret romances you always see in those TV dramas or in movies haha.
This poem was very simple, yet the way you constructed it made it speak volumes in its simplicity. I liked how you had adverbs end the first two stanzas, and I really wish you would have continued that throughout the entire poem. But that's not really a bad thing because the rest of the poem was really good.
The ending really closed the framework of the poem nicely. I imagine the feeling of secret lovers leaving being one of not only sadness and longing, but also one of a certain kind of freedom, a freedom that can only be achieved when two people are in love and know it deep in their hearts.
Overall this is a very simple, yet moving poem. I look forward to the next poem in the story, and I'll definitely be sure to read it.