Receding Hairline. Mature hairline or genetics? (photos)

Your temples have recessed and settled into their current shape.  Must ensure that this is not continuous and if so, begin looking at various medications to slow down the progression. If you are looking to recreate a specific look, your best option would be a hair restoration procedure.  If you are happy with the facial framing you now have, must work hard to minimize the progression of further hair loss.

That is not a hair loss because of ongoing process of androgenetic alopecia but  a simple juvenile type maturing of frontal hair line.  

To distinguish the difference between a Mature hairline or genetic hair loss can be difficult but your picture does suggest early recession with a persistent forelock in the middle