His half brother to be precise whom he has never met. Ds has never met his dad (the father's choice) and his brother lives far away. He's early 20s. Months ago ds chose something very special for his brothers birthday from his favourite specialist store. Ds was 6 at the time and put a great deal of time into choosing something. It cost a lot for me as I'm a single parent and a carer with no income except universal credit but ds had his heart set on it. The gift was sent special delivery and when I checked the tracking it had been signed for by his brother. It has never been mentioned at all. No thank you, nothing.
The brother has since said a few times about meeting up but when I reply to make arrangements he ignores my messages for months then replies to say his mental health is bad. Thankfully ds doesn't know about the suggested meet ups so he isn't disappointed but I'm increasingly fed up of it all. It's been going on for years on and off with months of no contact at all then suddenly saying to meet up then nothing ever comes of it. He's an adult and in his late teens I excused his commitment to anything due to his age but now he's left uni and I don't think it's too much to ask for him to say thank you for gifts and to reply about meeting up. Thinking about it he's never said thank you for anything in all the years I've known him (I knew him when I was with his dad). Aibu to give up now? I've given it 7 years. If ds wants to keep in touch once he's a teen they can sort that out between themselves.