Do you have a "go to" romance?

Is there a romance (no historical, not too angsty, very feel-good) that you have revisited multiple times when you've had a run of "not very good" shows that you've watched?  My viewing seems to go in spurts of shows that I've not been thrilled with and when I need a romance fix I go back to CLOY, Dating in the Kitchen, Oh My Venus, Her Private Live, 30 but 17.  I'd love to hear your recommendations.  I've seen so many shows, but I'm hoping that someone can recommend something new.  I NEED ROMANCE!

The OP asked for Dramas that "you have revisited multiple times when you've had a run of "not very good" shows that you've watched? " so I'm surprised to find "My Little Happiness" suggested, as it only aired a few months ago, making multiple rewatches after a a run of bad show seem unlikely. 

For me, I have watched the following Dramas between 3 and 5 times each.

A Love So Beautiful

The Love Equations

Put Your Head On My Shoulder

I'm also partway through a rewatch of Le Coup de Foudre, one of my favourites because it's partly based on the writer's own life story and because the OTP are married with a child IRL.

4-punkan no Marigold  (Never felt so good after completing a drama. The ending is as good as it can be)

A drama wich I always watch to get my heart warm is :Love 020 'cause I think it's soooo sweet 

Thank you so much for the recommendations.  I'm going to check out the ones I haven't yet seen.  Gawella38 - totally agree with your suggestions!  Ella - I'm in the minority here, I realize, but I didn't care for Run On.

goblin and weightlifting fairy, can never get sick of them