Dia menikahi cowo itu karena uangnya

English Translation

She married him for his money.

“Cowok” with K is the right spelling, according to KBBI. “Cowok” means “a young guy” in a casual way.

Cowo” without K is ranked 24,565th in the University of Leipzig Indonesian Corpus whereas “cowok” is 5,823rd. The example sentences and co-occurrence data suggest that “cowo” is probably slang.