Two short stanzas, and the poem moves from a landscape to a feeling. In the first, the speaker remembers places in a forest where "we" once met. Those spots seem to have shaped themselves into doors, as if the memory of the meeting changed the space around it. A clearing or a bend in the path becomes an entrance, something you could step through.
The second stanza turns inward. Because of those meetings, the heart's wishes have grown "intricate together," tangled up like roots or branches, which fits the title. Nothing here is simple or pure. Sorrow and gladness sit "in balance," neither one winning out.
The speaker sounds reflective and calm rather than upset. There's a quiet acceptance in the way loss and joy are weighed side by side. The mood is gentle and a little wistful, the way a familiar place can feel when it holds both happy and sad memories at once.