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.
Kathy and Ramiro couldn't resist each other's charm.
Katelyn fell head over heels for Hector.
Kat and Raphael are the perfect match.
Kendall whispered sweet nothings into Adrian's ear.
Keira and Roberto share a love that knows no boundaries.
Kat and Roland are inseparable.
Kat and Reginald are meant for each other.
Kat and Raymond paint a picture of pure romance.
Kendra and Romeo have a love that will endure any storm.
I hope you find these variations helpful!