Magic, Ultimatums don't work when someone is confused about life in general. They 99% of the time will take the easiest way out of a situation versus doing the hard work. What you want and what he wants right now are entirely two different things. He wants his independence and he does not want a personal relationship w/you. You want him to comment to piecing and he's not even close to that part of commitment w/you right now. In fact, I see him going the other way very hard and fast because you are very needy and he can't deal w/that right now.
I think you need to leave well enough alone for the evening. Why set yourself up for more hurt by texting him? Just leave the issue alone and if you need to revisit the conversation tomorrow, just say "I'm sorry you feel the way that you do". Do not tell the man you are lonely or say ILY. He already knows how you feel and he knows you are very needy and in a panic. Do not add any additional pressure on him. Back off, leave him alone and give him ample space to think about the situation.
We have been telling you for a long time to keep the focus on you and yes, you need to save yourself first. You may want to go home, but he's made it very plain that home is where you are right now...at your parents. He's already begun the process of removing any reminders of you in the home he is living in right now...the message is very clear...he wants his independence.
Magic, please leave him alone. It's time that you turned the focus back on to you. You didn't break him, therefore you control him and you sure as h@ll can't change his mind about how he feels at this moment.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
