Complex sentence: Starfire has romantic feelings for Robin after kissing him to learn English in the "Go" episode; these feelings grow stronger as the series progresses, and culminates with their first true romantic kiss in the conclusion of the' movie.
Split into simpler sentences: Starfire has romantic feelings for Robin after kissing him to learn English in the "Go" episode; these feelings grow stronger as the series progresses. Eventually, Robin and Starfire finally confess their feelings and share their first true romantic kiss in the conclusion of the' movie.