Sirius's Serious Girlfriend

Sirius Black and Anastasia Wilson are sworn enemies, who never missed a single chance to insult each other. They thought that they can never establish peace between, but destiny had other thing planned for them. As years passed by, they both realize that, they both have falled for each other deeply. But one of them realizes it soon, and tries to establish peace between them.

Who do you think is the first one to realize that he/she is in love?
Peep into know more about Sirius's Serious Girlfriend..

PS: I only owe Anastasia Wilson and her family members.