He took back his proposal after I asked for a ring?

Thebeck
So my boyfriend and I have been together about one year. Both of us were pretty down and lonely when we met each other. Anyway, he asked me to marry him about 2 weeks ago and he didn't have a ring. At first I thought he was going to buy one later so I didn't question it. But after a day or two I asked him when will I get my ring and he said he wasn't going to buy a ring. That we didn't need it and should save the money for our house. (We live with some roommates in a big house.) Well, we got into an argument and at the end of it, he told me the weddings off and he moved out of the house the next day and is staying with one of his friends and refuses to talk to me. Why the hell did he over react? I admit that me wanting a ring is stupid but I still want one. It doesn’t have to be a 2000 dollar ring or something.

1. Why did he overreact?
2. How do I get him to come back and marry me?
Updates
+1 y
We're back together! So no more need for opinions.
He took back his proposal after I asked for a ring?
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