Yes. I knew him for maybe two months (this is not our first Christmas together).

But this is one of those questions the answer to which is of no value. So much depends on what the nature of the relationship is. Is the yf a nephew or other relation? is he your best friend's son? is he your godson? is he a boy you met through church? Did you meet him through some organization? Is he a neighbor? Is he a boy who lives in your building? Is he a boy you have some professional contact with? What is your relation to his parents? There are so many different situations in which yf relationships are cultivated and the appropriateness of gift giving is going to be very different depending on the specifics of your relationship. While it may be perfectly appropriate for a bl to give his yf a Christmas present after knowing him for a very short time in one situation, it may be inappropriate despite the fact they have known each other for many years in another.