Sure! Here is a collection of sentences that include synonyms for each word in the keyword "kat and romeo":
Katherine and Roman are deeply in love.
Katie and Ramiro couldn't resist each other's charm.
Kira fell head over heels for Romeo.
Karina and Raphael are the perfect match.
Kendall whispered sweet nothings into Adrian's ear.
Kiera and Roberto share a love
that knows no boundaries.
Kat and Randall are inseparable.
Keisha and Reginald are meant for each other.
Karen and Reuben paint a picture of pure romance.
Kassidy and Russell have a love that will endure any storm.
I hope you find these variations helpful!