"Doting on" is often used to describe someone who shows excessive love or fondness towards someone or something. Some synonyms to convey this feeling may include "adore," "cherish," "treasure," or "reverence." Additionally, other phrases could be used to convey a similar sentiment, such as "holding dear," "holding in high esteem," "having a soft spot for," or "showing affection towards." Regardless of the specific phrasing used, the intention behind the words is to express the depth of emotional attachment that the speaker feels towards the subject of their affection.