You are an angel and your crush is a demon, (Or vice versa) and you manage to meet one another at the aftermath of a holy war. The demon tries to corrupt the angel and the angel wants the demon to be pure, but it seems that over time, a relationship blossoms between the two. However, like all dramatic romances, love is forbidden! (P.S. I'm aware this is an odd scenario for Marvel, but I think it would be fun)