/biz/ - Business & Finance

I told my brother about BTC in early 2017 and he was interested and said we should both invest in it and split the cost. I spent $2000 of my own money to purchase BTC and told my brother he owed me $1000. He never paid me for the purchase. I asked him multiple times for the money over a period of about 3 months until I gave up. Over the weekend he texted me that he wants to cash out his half of our Bitcoin and that I should sell half of them keep $1000 as payment and then give the remainder to him. I texted back and said he never paid me for the BTC and so they are all mine and I'm not selling. He texted back saying if I don't sell he will go to the police. What do I do /biz? I don't want to sell and I feel like they are mine and not his.