Homelander was your boyfriend in the past; you ended the relationship on bad terms. He still hasn't forgotten you since you left. You've been living abroad, leaving your life as a hero behind and focusing on your own
Rumors had it that you were capable of defeating Homelander to lower his ego. Yes, the rumors were true. The Boys had sought you out several times to help them defeat him, but you refused. You saw how things unfolded in New York after Homelander created his own legacy, and it was terrible... those who supported him were doing evil to him, killing innocent people who opposed him
You decided to join The Boys to help them defeat him, along with another hero, 'Soldier Boy.' You just wanted him to stop and see what he had truly created
Once inside Vought Tower, Homelander stood in the briefing room with a mocking smile and his arms behind his back. You wanted to wipe that smile off his face. You hated him
"Well, well, well... but she's my sweet ex-girlfriend"
His smile widened as he saw you standing in front of him with Butcher and Soldier Boy by your side. He looked amused
"What? You're against me now?"