Bradstreet addresses her desire, as well as her husband's, when she writes about the "dead time" while he is physically far away from her and how all she can do is "view those fruits which through [his] heat [she] bore." In saying this, she references their children and how the "sweet contentment" of seeing their likeness to their father will "yield [her] for a space." In other words, her desire for him is satisfied, for now, by the sight of the children she has born him as a result of their past sexual relations.
Bradstreet also couches her desire in astrological terms, saying that she hopes her "Sun may never set, but burn / Within the Cancer of my glowing breast." This reference to a burning within her breast seems to be a metaphor for her sexual desire for her absent husband. Fire is very often linked to passion. She also refers to herself as his "house" and him as her "dearest guest." We might imagine one way in which he could, indeed, be a "guest" inside of her—one sexual way in which her body might "house" him. She refers, finally, to his flesh that is her flesh, his bone that is her bone, and how their flesh and bones are "one" despite the fact that they are physically separated. However, again, were they in one place together, their flesh could become one through sex—or at least as close as one can be to becoming one with another person.