"Love" clearly meant something different in 1959 than it does today. Side note: I hope to one day be so swept up in telling someone a story that they need to slap me for the noise of the surrounding area to become audible again.
The film is a little melodramatic and pretentious for my taste, and touches on some great ideas but never really gets anywhere with them. Ultimately this film was surpassed by the Before Sunrise movies.