First of all, cartwheel, you kept your boundaries about not give him the phone, well done.

My guess is: It is/was for him a recycle attempt. Having sex with you brought him back in a romantic rs with you. And for him this means he needs full control over all your moves. All his paranoia and jealousy kicked in during the night from friday till saturday. Perhaps behind all this is a big fear of abandonment.
May I ask you, how many recyles did you have with him?
Sometimes our brain needs a while to see the whole pattern... .and yes, his behavior is unhealthy. And stay with your feelings being scared about it.