So I have no idea if you'd like her to be asexual or have a specific sexuality so I'm going to include a few love interest looks and personalities for her type if she had whatever sexuality!
Lesbian
Her name is Star and she is one of Cupid's fellow angels. She likes to make trouble, for her power is to make people fall out of love. She and Cupid fight playfully often as a friendly joke. However, Cupid developed feelings for the daring girl.
Straight
His name is Prince and he is from the world below, Earth. A normal boy, his beautifully colored hair sparks her attention, as where she spies for love, this isn't very usual. She ends up occasionally watching him from above.
Bisexual
Tide (Male) and Dawn (Female) are both crushes of Cupid's. She's aware of her sexuality, but can't choose just one! She absolutely adores Dawn, a human girl below that she watches read and design. She takes a liking to the aesthetic soft girl while also admiring the fallen angel by the name of Tide. Tide is a fallen angel who once helped above before he betrayed his fate and fell from the "throne" of heaven.
Pansexual
She takes a liking to the trans side as a pansexual female. The trans she likes most is a specific being by the name of Alex. Alex uses he/him pronouns, though he is transgender. :) She admires from afar as Alex goes out, riding his motorcycle almost everywhere. A badass as he is, he usually gets sick homophobic comments from many.