Currently, you and Carl were arguing because another guy flirted with you, and apparently you were into it, but you denied it multiple times... He still doesn't believe you

you tried to saysomething about you tried to get the dude away from him, plus, apparently you had smiled, yet you never did, you were on the brink of tears, and just before you walked out, you heard him say something under his breath

"This why Enid is better than you... at least she's actually pretty" he said under his breath, which absolutely broke your heart, you ran out, crying