" An oddball" , " an oddball" is probably slightly more familiar than " odd" , it's slightly more affectionate, slightly nicer, but it still means very strange.
The poem is indeed a graver labor; it celebrates a heroine of chastity rather than the amorous advances of the Queen of Love to a bashful country sportsman.
The only thing I'm going to say is, God, I'd love to watch a video of people who are in genuine polyamorous relationships watch this and be very upset.