It's about before the full "Sunrise" of love. It's about the tickles that are developing all through the day, before the "Sunrise" of feelings to wake up and take control; to depart on the right time... yet they will be developed despite all! Before the sun rays shower you.. you escape just in time! You think you escaped, but you've taken along with you the first ray of the Sun; and your pocket is full of Sunshine.
Before the final "Sunset" of feelings, the last chance. Love has just grown without even knowing. Your heart beats are incontrollable. Yet, a sunset is yet to come, if you don't let your heart that is full of Light just shine. It's just before Love has its own sunset, fades and gets lost! It's before you wither and no longer see the Light. It's before you get burned by that Light kept within. It's your final statement, just before your own Sunset ...
But the whole matter...just lies "In Between" those two stages!
p.s. Commenting on the mere symbolic titles of the movies: Before Sunrise and its sequel, Before Sunset. (Both movies are definitely worth-watching)