If any person- man, woman, adult or child- treated me the way your BF was treating you I would tell them to take a hike and keep on walking! He may have thought he was teasing you but he was being mean and immature. If he really cared about your feelings he would have tried to reassure you and ease your concerns. Instead he made fun of you and your emotions and then walked out when you were at your worst.

You will feel bad for awhile and miss him too. But, soon you will feel better and meet other people. As long as you were with him you would not meet anyone else so you are better off without him. Good luck. Let us know what happens.