Dote on
Definition 1 of 1
Pro Tip 1/3Emotional Excess
Indicates excessive affection, even when the person receiving it might not need or want it. 
Even though her son is 30, she still dotes on him like he's a child.
Pro Tip 2/3Positive Context
Generally used in positive contexts to express deep affection, despite the potential for overindulgence. 
Her grandmother dotes on the whole family, always ready with hugs and cookies.
Pro Tip 3/3Often Family
Commonly used with close family relationships, like parents to children or grandchildren. 
It's heartwarming to see how much he dotes on his little granddaughter.