Here's what you can do:
1. Check online poetry databases: Search for "Spectrum of Love" on websites like Poetry Foundation, Poetry.com, or All Poetry.
2. Search specific authors: If you have an author in mind, try searching their works for a poem with that title.
3. Look for similar themes: You could search for poems about love, the spectrum of emotions, or different kinds of love.
It's also possible:
* The poem might be a personal or unpublished work.
* The title might be slightly different, and you're recalling it incorrectly.
If you can provide any further information about the poem (author, context, specific lines), it might help in the search.