Courageous lover gives heart away (6)
I believe the answer is:
daring
'courageous' is the definition.
(daring can mean adventurous or courageous)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for daring that I've seen before include "Challenging or defying" , "Take (control)" , "Audacious - bravery" , "A grind (anag.)" , "'Adventurous, brave (6)'" .)