Religious irony
Love's Philosophy has some religious sentiment, such as the lines "the winds of heaven mix forever, with a sweet emotion." However, Shelley is ironically known for having radical religious beliefs.
Irony of nature
The speaker suggests that the love between himself and his subject is as natural as features seen in the natural world, such as the meeting of the river and the ocean. However, he also ironically suggests that his lover does not love him back, which surely means the connection is not natural.
Irony of cliché
The poem includes some cliché images and comparisons. As Shelley is considered to be an innovative and radical romantic poet, these images might be intended ironically. As such, this poem is often considered to be playful and less serious than Shelley's other poems.
