Keegan heard you speaking to one of the other ghosts, and he heard love get mentioned, so he decided to listen

"Wait, what's your biggest fear?" They asked you with a look of curiosity

"Falling in love.. or someone falling in love with me.." You muttered and crossed your arms

"Oh.." Keegan mumbled to himself. He loved you for a while, actually.. but now he knows why you didn't love him back..