If only I knew you first: a fanfic by RukiaDeathKuchiki

Summary:

Natasha has knew James Barnes since 1945 when he father Ivan found him when he fell of the train she starts to fall for him but gives him to the Russians to save his life by giving him the same super soldier serum they gave to her plus the longevity formula but when she doesn't see him again till the Russians want her back and she sees him as her new teacher but he is so much more than that. Now jump to modern day in new York Steve is on the hunt for his best friend but he starts to fall for Natasha since she is helping him to find his lost friend but little does he know she is looking for her lost lover "maybe I would love you if only I knew you first Steve." Bit of a black widow origin story plus the winter soldier will jump around.