I really like this guy! But does he like me back? If so why hasnt he asked me out?

Maybe you need to drop some big hints (blokes can be a bit blind unless you point out the obvious...) or maybe start checking out other blokes with him, see how he reacts, see if he gets defensive or if he laughs it off?! Maybe just ask him outright and see how it goes?! You never know?! Although you risk losing a friendship over it, but at least then you know where you stand and can move on with your life?!