giving your husband money!

My husband is always asking me for money and gets offended when I say no.. the recent instant is of him wanting to buy a very expensive item for himself and asked me for half of the money. I told him I didn't have the money and that the only money I have is the money I have been saving towards our mortgage. He asked me to give him that and got offended because I said no. He said it means I don't care about him! I am 25 and my husband is in his thirties. Am I in the wrong here?