I'm addicted to the older, classic romances which have such intense feelings, even when the storyline is totally contrived, you believe in their love. My number 1 happy fix is Autumn's Concerto. I always rewatch it after I cry my eyes out after the sad melodramas. I think the most intense love story with mesmerizing music is Stairway to Heaven. It's worth the tears because you'll never forget it. It is a copy of the hugely successful Winter Sonata that started the whole k wave in 2002 and got me obsessed with K drama. Every minute of Stairway to Heaven is romance. You don't have to muddle through hours of silly fillers to get to the love.
Follow that with another happy fix, Secret Garden. Then, get back to the intense melodramas: I'm Sorry I Love You, A Love to Kill, and The Snow Queen.