Those are just predictions of people about bitcoin reaching new all time high in may-june and whatever, there is no certainty in the crypto market. One can win as well as lose so one must be prepared for both and invest and take risk accordingly. Crypto market is the most volatile and unstable market. We never know whats gonna happens next. Its good to have some investment in crypto, but selling real world property in order to buy virtual currency is just not wise. Reconsider your support towards his decision.