Caleb once said, "I promise I won't leave you, and if anyone wants to hurt you, tell me, I'll beat him up." Should he blame himself?

Today is the day Caleb marries the woman of his choice, but she's not you, she's his ex. And after the marriage ceremony, he officially belonged to someone else, which made him hurt, really hurt

You approached Caleb to congratulate him, he was surprised because you came to his wedding...

"s-sorry..."