Guys get in here... What would you do if proposed 2your girlfriend & she said NO??

This would probably be the most embarrassing moment for this young man as he would have felt the ground should break open for him to enter the moment his Lady said NO to his proposal!!
Make sure she loves and is ready to spend her life with u before popping the magical question!!
I feel for him though but what would become of their relationship now that she said NO?... Breakup???