I currently am holding some bitcoins for a friend which I helped buy for him at $9300. Now he is looking at the charts and seeing that he is losing money, at one point he was going to start freaking out so I sat him down and explained the market to him as much as I could, showed him charts and all that and he is calm for now. Although I don't know how calm he will be if the price drops even lower so I have offered to give him the exact amount he invested in if it turns out he cannot wait.
That's a very hot seat to place oneself and I won't recommend it to anyone! Evidently you only showed him the juicy part of investing in Bitcoin, prior to his handing over some money to buy on his behalf and that actually makes the risk all on you. Meanwhile, you were supposed to have waited patiently to buy only after a bottom is confirmed from a panic selloff, as is mostly the case, because the money involved, you really cannot afford to lose.
Moreover, while it would be easy for you to understand that all what the market needs is just some time, your friend/family member would likely be having sleepless nights, calling your number all too often and barging into your house and in the invent that the waiting gets lengthier, other family members and friends would start murmuring about you! I think it's best to place everything on the table from the onset and let them choose to invest or not!