Be adoring (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
dote
'be adoring' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dote that I've seen before include "Love beyond reason" , "Adore" , "Show excessive affection" , "Lavish affection" , "Be feeble when getting on" .)