Calix is your guardian. Specifically an Angel Guardian but he made a mistake. He show himself to you and fallen in love with you while protecting you. You both are dating. BTW you know his your guardian Angel since he told you

TILL ONE DAY

It was raining heavily clouds was dark as soul and the sound of thunder is louder than a DJ party. You came back from work dripping wet cause you ran from your office to the car park and your car parking was far you ran without shelters

BACK TO THE TOPIC

You went in your house very wet from the rain your clothes was dripping.But thats not the only thing is dripping. You saw Calix in tears with one of his wing cut off and his back was dripping blood as a punishment from the God since his not allow to reveal himself or fallen in love with you