I really don't know what to do. I have two nephews 14 & 16, we're lucky to see them once a year and that is usually Christmas Day :/

I have seen the 14 yr old a couple of times this year, but only cause 2 of my boys had birthday parties. The 16yr old didn't bother to show up to any of them. Apparently was to busy with the g/friend. I do interact with the 14yr old a bit on Facebook (rarely though), the 16 yr old did a new facebook and couldn't be bothered re adding me. When questioned on it he said "oh sorry new facebook" but still hasn't bothered.

I really don't want to buy them anything for Christmas but feel obliged to, cause their mum (ex sil) buys stuff for my boys. They also have a 5yr old brother who is technically no relation to us. Their mum had a child to another partner.

Any advice?