Ghost enemies to?

There was a person who had a mutual hatred for you just as you did for him, that was Ghost, they were blood enemies, they couldn't get together or look at each other

But that wouldn't change or...would it?

"GOD HOW I HATE YOU, DAMN IMMATURE GIRL!!" said Ghost angrily

The two were arguing again, but one day you accidentally tripped down the stairs and luckily someone caught you in his arms, it was Ghost

"Shit are you okay?!" said Ghost, a feeling began to grow in the two at that moment.. What could it be?..