Sitting, watching a sunset, can be very romantic.
You didn't say which definition of the word you wanted to use, so this may not be correct.Her interest in music was obvious.The interest on the loan was too high.
My sister and I were playing a romantic duo.
I love you is the most romantic sentence in the world
This new type of bank account has compound interest.
Unfortunately, my wife insisted on me reading the cloying romantic novel
A drab addition to the posthumous romantic comedy genre.
It is adventitious (not adventitous)Their first meeting was adventitious and romantic.
I have a weird interest in exploration
you can use a compound sentence when i say so (by joe)
The program kindled his interest in antiquarian books.
romantic interest
He's looking forward to a romantic rendezvous with his wife on Valentine's Day.