Best mate is child free, she always buys presents for my kids. We agreed to stop gifts between us years and years ago, before I had kids.
She buys for my kids because she loves them and enjoys it but I feel bad that I'm not reciprocating it. She won't ever have kids so it's not like I can reciprocate at any point.
Do I buy for her and her partner again, but will that then make them buy for me again?