Annie,
I am sorry to read of your sorrow at the break up with your Boyfriend. No one here can tell you why he has behaved this way. He might not know himself.
Whatever the reason, enjoy the lack of abuse, and get to work healing from the harm the verbal abuse did to you so you can avoid verbally abusive boyfriends in the future.
If you are ever in an abusive relationship again, end it. You can get very hurt by someone treating you this way and you don't deserve that. JMHO sweetie.
Keep working with your therapist and take care of you.
Kindly,
Kitt