Kumali, I have come over from your other thread.
You have given different lengths of the relationship on different threads, but far as I can work out, you had been together as little as three or four months before he started showing clear symptoms of psychosis. That means he has probably been building up to this episode for the entire time you have known him. In fact, looking at it from that perspective, it is possible that your whole relationship may be a symptom of his impending breakdown: extreme positive emotions, rushing into things, making rash decisions, making grand plans for the future etc are all symptoms of the manic phase of bipolar disorder (see basic description here: en.wikipedia.org/wiki/Bipolar_disorder).
You ask if he will 'come back' - I would say there is a strong likelihood that the person who will 'come back' may well not be the person you think you have fallen in love with, but a much flatter, less exciting person, and the future with him may not look so appealing.
If you still think you want to try to continue the relationship, at least take a step back, try to think realistically, and protect your own wellbeing and that of your children rather than chasing a future with a man you really don't know.
I hope you and your children have a happy and peaceful Christmas together.