If you still doing that 1 year till now then maybe you are making money just today because the value of Bitcoin climb up high again to 18k$ and that is enough to double your borrowed money now.
Or wait even longer because the next ATH is going to happen so stay Tune.
It is a matter of great fortune for him that the price of Bitcoin has reached around 18K, although I do not like to buy Bitcoin with a loan. Now he is able to earn several times more the profit of his borrowed money, so it would be wise to withdraw the profit money.