Should I keep this or scrap it?

At first I wasn't sure who's point of view this was, the boy or the girl. Since you said 'As he' in the beginning, I thought it was the guy's so be careful. You also start two sentences with 'As' so try not to do that. 'Lyndon and her alone' seems off, consider rewording. The description of the eyes as 'wide' is a little odd...same with 'cupid's bow.' That seems like a description of female lips. Also 'be with Lydon' could be more powerful - do you mean alone with nobody else in the world? The rest of it seems interesting - it's up to you to keep it or not. Not bad, just keep working on it!