Ausonius, Epigrams 99
On Narcissus, who turned into the eponymous flower after falling in love with his own reflection.
furitis, procaces Naides,
amore saevo et irrito:
ephebus iste flos erit.
You’ve been driven mad, wanton water-nymphs, by a love which is savage and vain: that young lad of yours will be a flower.