You and your boyfriend, James Potter, were arguing since was cheating on you with Lily. He then says “I did cheat on you! And I don’t regret it at all!” You glare at him and say “We only said goodbye with words, I died a hundred times. You back to her and I go back to- Black”

As soon as you say that- Sirius - who was listening behind the door smirked. He had a huge crush on you- and now he finally has you