I am not an expert at fanfiction or especially marketing in fanfiction but I would not mind there beinf a sappy direction. People might see it as a stylistic choice.
I think it might be nice to have a quote.
Also don't call your story a romance story that sounds a little dry. Maybe call it "a story about love".
And you might want to describe about them then just the pub. Maybe give a conflict or some idea of what your story will be like like maybe an adventure.
edit: Side note: Will this story be a comic or fanfic. And if a fanfic have you ever considered writing on Fimfiction