It’s hard to nail it down to only one, but I found I * bleeping * hate you! by @daxa to be pretty entertaining and funny (it’s a comedy though, so not strictly romance). 
I also love Austentatious and The Arrangment by @thebutterfly_episode, but The Arrangement makes me laugh (in a good way, of course) - I’ve lost count of the amount of times Cassius has threatened to shoot someone.
Liar by Sugarfoot.stories always manages to pull me in and Christian’s love for Amelia is so swoon-worthy.
Folk Devils by @M.jordan is just overall entertaining and I love it! 