This is an unfortunate situation due to the amount involved, especially if it wasn't documented, (contract between the two of you, paper trail of some kind for you to use as legal leverage when/if you need to rely upon that).

"The best way to find out who your REAL friends are is to loan them money".

(It's also the ideal way of ridding yourself of those in your life who you can't eliminate through other means....lol. They borrow, then vanish....until next time in need...lmao).

And I have to agree with Marjan. Loan only what you can afford under the assumption that you'll never see it again. If you are repaid, what a pleasant surprise. If you're not, no room for disappointment.

If you had loaned him this large amount of money because he was in such dire need, then surely you documented it. If not, then it's very likely that you may have to chalk this error up as an expensive lesson learned, especially if he has no intentions of repayment.
If there were no documents prepared at the time of the loan, you can still create a written agreement for the two of you to sign, (tell him it's for tax reasons..if he should question your motives for documentations, which I wouldn't doubt he may). So long as you get his signature on an agreement that he does owe you this money, you are protecting yourself.

That IS an awful large amount of money to loan out to someone who has no means of repayment, despite their verbal good intentions.
If there is no contract at present, create one, have him sign. If he refuses, or disputes your reasons for this, that should tell you right there that he has little to no intentions of following through with repayment.
And come to think of it, even if you do have documentation to his debt to you, the fact remains that "you can't squeeze blood out of a turnip". If he isn't employed, & has absolutely no means of paying you back, then...."lesson learned"? Cut your losses and time to move on?

To answer the question to your thread title: Hell YES! You have a damn good right to be ticked.

I truly hope this works out for you. Good luck

Shangrala