The two lines in this excerpt that suggest the physical union of the lovers are <em>And in this flea our two bloods mingled be</em>; the flea has bitten both lovers and now the insect contains their blood convined.
<em>And pampered swells with one blood made of two</em>; this implies in a certain erotic way, that the flea gets bigger as it sucks their blood.
These two lines suggest the physical union of the lovers:
"And in this flea <u>our two bloods mingled be</u>". The flea has bitten both the poet and his beloved ( the woman he loves so much). As a consequence, their bloods have mixed up. See underlined words.
"... and pampered swells <u>with one blood made of two"</u>. The poet thinks that they have already made love through the flea's blood. However, this will no be punished since it is not a sin; the beloved's virginity has not been lost -loss of maidenhead- . The flea's body has got bigger because it has the blood of the poet and his beloved's.See underlined words.
Well the definition(s) of a composition is <span>* somethings ingredients or constituents, in which a whole or mixture is made * work of music, art, or literature</span><span> </span>*preparing to write by setting up the characters in order<span>* a contact to pay off a debt</span>so it'd depend on what meaning, you are asking for