Maybe not entirely. But that does not mean you cannot be his friend.

Ah, I should refrain from the dangerous 'my older self and friendship' conversations. Perhaps...

[Loki smiles again, the type of smile he sometimes used to get things done.]

...you can give the stone to me and I shall keep it. And you will approach my older self without said stone and test if he is a truly good friend, yes? Friendship comes from the heart, not from a stone.

And if you wish to have it back I will give it back immediately.