A beaming Jennifer Lopez gushes that she wants studly beau Ben Affleck to father her children as she flashes a gigantic sparkler on her finger and cryptically answers questions in an interview aired yesterday -- fueling rumors that Hollywood's hippest pair are engaged.

"You [and Ben] have talked about marriage and kids?" MTV News correspondent Sway asks the curvy caboosed crooner, who replies, "Yeah."

Asked how many kids she wants, J-Lo responds, "One healthy one would be plenty for me, but you know, whatever the good Lord deems to bless me with."

"But you would be happy if [Ben] was the father of your first and all children," Sway says.

"Absolutely, yes," a smiling J-Lo answers.

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