Lauren had been single for years and thus had extremely high requirements of her other half. She would definitely not marry just anyone.
Jordan didn't want Lauren to sacrifice her own happiness because of him!
However, Chris lost his temper as soon as he heard that and he snapped, "Punk, what nonsense are you spouting!?! How dare you try to stop Lauren from marrying me? Do you have a death wish?"
Jordan completely ignored him and was still staring at Lauren's beautiful side profile. "Lauren, I know you don't like him at all, and you shouldn't marry someone you don't have any feelings for at all. You won't be happy if you do."
In order to get closer to Lauren and to express goodwill to him, he decided to call her by her name instead of calling her 'Miss Howard'.
It was just like how he called Victoria by her name.