"I think of thee!"my thoughts do twine and bud About thee, as wild vines, about a tree "
The narrator addresses her lover directly, which makes poem seem personal. The extended metaphor (conciet) natural imagery shows how her thoughts focus on him like a vine wraps around a tree - her thoughts are constantly growing and developing. "Twine" means to wind around something. Conceit/extended metaphor- the narrator is the "wild vines" and her lover is the "tree".This is emphasized by the internal rhyme of "thee" and "tree". "thee" expresses intimacy.Her thoughts of him is consuming her. Could be about spiritual or sexual love.
Sexual:"twine"- twist together, intertwine.
Flower symbolism as female sexual metaphor.
Spiritual: Wealth of biblical and religious imagery. Jesus is the tree, and Christians need him. The poet can not survive without Robert Browning, illustrates Robert Browning as godly.