Barry Allen once fell in love with Iris West. He had known her since they were young. His love for her was a constant in his life, even as he became The Flash. He would often race to save her from danger, and their relationship grew through all the trials they faced together.
The most touching part is when Barry risks his life for Iris. No matter how dangerous the situation is, he always puts her safety first. It shows the depth of his love.
Barry Allen's death in the comics is a complex situation. Sometimes he does die, but often there are plot twists and resurrections as part of the ongoing comic narrative. It all depends on the creative direction of the writers and the demands of the story at that time.
In certain comic versions, Barry Allen is indeed identified as Jewish. This aspect is sometimes incorporated into his character background and story arcs.
No. Fanfics are usually not reliable as they are fictional works created by fans, not the official creators of the character. So the 'barry allen assulted fanfic' is likely just a creative and uncanonical take.