* The speaker's love for his/her partner is the central theme of the poem.
* The speaker's love for the natural world is also present in the poem.
Death:
* Death is another important theme in the poem.
* The speaker reflects on the death of his/her partner and the way it has affected his/her life.
Time:
* Time is another important theme in the poem.
* The speaker reflects on the passing of time and the way it has affected his/her relationship with his/her partner.
Nature:
* Nature is another important theme in the poem.
* The speaker finds solace in the natural world and uses it as a way to escape from his/her grief.
Loss:
* The loss of the speaker's partner is a major theme in the poem.
* The speaker reflects on the way he/she has coped with this loss and the way it has changed his/her life.