"GOE, and catche a falling starre,
See in text (Song)
Some critics have read this opening line as a metaphor that encompasses the theme of the poem. A “falling star” can be read as a metaphor for a virginal woman who “falls” from grace by being convinced to be unchaste. So, to “catch a falling star” can be read as catching a woman before she falls. In the context of the other metaphors in this stanza, the speaker suggests that “catching a falling star” is both physically and metaphorically impossible. In other words, it is just as impossible to catch an actual meteor as it is to prevent a woman from becoming unchaste.