1 And his true love, fair Psyche, with him plays,

Psyche > ("The Soul"; her allegorical story is told in The Golden
Ass
by Apuleius)

2 Fair Psyche, to him lately reconciled 3 After long troubles and unmeet upbrays,

unmeet > unfitting; hence: unfair, unreasonable upbrays > reproaches, reproofs

4 With which his mother, Venus, her reviled, 5 And eke himself her cruelly exiled:

eke > also

6 But now in steadfast love and happy state 7 She with him lives, and has him borne a child, 8 Pleasure, that does both gods and men aggrate,

Pleasure > (Volupia or Voluptas, the personification of sensual pleasure) aggrate > please; gratify (SUS)

9 Pleasure, the daughter of Cupid and Psyche late.

late > late (i.e. recently deceased, qualifying "Psyche"); recent (qualifying "daughter")