Her latest movie is a 'romantic' comedy. [=a comedy about two people who fall in love with each other]
They were 'romantically' involved. [=they had a romantic/sexual relationship with each other]
She had a lot of big 'romantic' dreams of becoming an actress.
(..) - Mmm. that you love, you take 'em to the opera. Yeah, I ought to bring my girlfriend. That sounds romantic. - What? You have a girlfriend? - Yeah. Leonard, you didn't tell me you had a girlfriend. - I didn't? (..)2008 Two Lovers