How do you think I should handle getting money back.

About 1 1/2 years ago I loaned my boyfriend- friend $1,500 dollars.He was in a jam and seemed desperate. He needed 500 more and promised to give it back the next week. Everytime I ask, he will give it to me soon. I asked for a payment plan if it was a hardship, and he said he would just give me the money soon. Well, I never got it back. I am furious. How do you think I should handle this. Our relationship has cooled but still do not see the money.