It’s not just you. I looked after two of my first son’s three children, but not the third, as my DIL gave up work. So we never really bonded with him the same....although we do hide it.
We have five other grandchildren, who we love dearly, but have different levels of closeness. It depends on how much you are involved from the start I think.
Also..your DIL being annoyed with you, which she had no right to be, may not have helped.
Don’t worry, just keep doing what you’re doing. Closeness also ebbs in and out as they change ages.
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