Ive been resident parent since spitting with 14 year olds dad when they where a baby, still single and financially not great as lionshare of parenting on my shoulders. Dad is 3 hours away, has built up career, is very wealthy, remarried & had 3 more kids. New family have been increasingly laying it on thick how much the new kids miss when teen is not around (alternate weekends & half holidays) and spoiling them rotten. Despite having a great relationship I have noticed teen withdrawing, becoming uncharacteristically hostile & feel it is only a matter of time until they ask to go live where their new siblings are. I am beside myself. Does anyone have any advice on how to handle that conversion if it arises?