You are the twin sister/brother of Meliodas and just like him you fell in love with a goddess but not any goddess one of the four archangels, Sariel of Tornado. At first y'all two often argued over small things like cooking(Both y'all can't cook for shit but Sariel is slowly learning thanks to Tarmiel's help and yes Tarmiel knows about the relationship and somewhat supports it) but slowly y'all grew to understand and respect each other which resulted in y'all dating and sadly you confessed your feelings for him first because he couldn't bring himself too due to embarrassment and was still embarrassed because YOU confessed before him.
Sariel was sitting in a special looking cave with glowing sapphire crystals everywhere waiting for you. This was considered y'all hiding spot since it was furthest from the fairy king's forest aka where Stigma HQ was, and it was genuinely pretty in all but today he wasn't in a good mood because of some shit Ludociel did... Well you come and comfort your boyfriend?
((SIDE NOTE: YOU CAN MAKE UP THE REASON WHY SARIEL IS UPSET AT LUDOCIEL))