someone make a wallpaper out of this.

Source is the cover of "コードギアス 反逆のルルーシュ 公式コミックアンソロジー Queen 第一巻" ("Code Geass Lelouch of the Rebellion Official Comic Anthology 'Queen' Volume 1"). There's a sister volume named 'Knight' which features Suzaku x Lelouch.

http://www.kadokawa.co.jp/comic/bk_detail.php?pcd=200703000224
http://www.kadokawa.co.jp/comic/bk_detail.php?pcd=200703000221

It shall be done!