Casting - what look are we going for and why? (MALE CHARACTER)

For the male character we would preferably like him to have long hair so that we can work with it in hair and makeup. His look should also be quite edgy to complement the female characters look and when it comes to the interaction between them they will look good together. He should be quite tall and taller than the female actress and look late teens. he should be lanky so that he is easier to style. I think that a good reference to the look we are going for is like Robert Sheehan as he has long hair and is lanky.