Radujemo se lepim stvarima. We look forward to nice things. Radovati se means ’to look forward to’, or ’to rejoice’, ’to be happy about something’. It’s a good dative verb, to begin with, because in English as well we look forward to something, and that’s dative.
It’s connected to the word radost (joy) and radostan, radosna (joyful).