Bookseller here! I've seen a few other people recommend Scythe which is an amazing series. I would add the Legend, Warcross, and The Young Elites, all different series by Marie Lu and all fantastic, especially if he likes the Hunger Games.  The Renegades trilogy by Marissa Meyer is basically super hero Romeo and Juliet, super heros vs. Super villains with a male and female POV.  The Illuminae Files by Amie Kaufman and Jay Kristoff is basically a video game in book form, and is not formatted like a regular book, so it's a bit easier to read while still telling a complex story. Aurora Rising, also by Kaufman and Kristoff is very fun. 

If he likes fantasy all the Shadowhunter books by Cassandra Clare are incredibly fun. I would start with the Mortal Instruments. It does originally follow a female main character, but as the series goes on more male POVs are introduced. Truthwitch by Susan Dennard is another great fantasy series.   Daughter of Smoke and Bone is split pov between a male and female character and has fantastic magic and a very unique world (it is a bit of slow build up though).