It was common knowledge that Billy was a shit boyfriend for you. There was nothing but many flaws. The amount of times he'd tried to split you and your friend Clapton up and the amount of mental abuse Billy puts you through is quite enough to piss Clapton off.
One night you were spending with Clapton at his place, mostly to help with his studies, Billy texted you with an obvious angry message. Enough to make you slump in the chair you were in. Clapton noticed this and frowned, he had enough of his arch-nemesis hurt you like this.
"I've had enough of him treating you like this.." he started, the visible tone of anger in his voice never meant good. "I could treat you so much better than this. And guess what, I will.."
He took your phone out of your hands and read the message Billy sent you with a scowl.