Do I keep my distance?

If you hold a person too tightly you might lose them easily because it's hard to hold something or someone you value but not value you. I think you should give him time on his own maybe he has difficulties on his personal life and if you were really seen by this guy as a friend he should have told you already what he's problem is. You should give him space because your not committed to him at all you guys are just friends but if I'm mistaken if your more than friends then you should talk things out. Don't be too affected by this because it might cause you to lose attention to more important things like your work and your own personal life.