Looking away quickly?

Looking away quickly

This guy I will often catch him looking at me or glancing (especially when I'm sat next to him or doing my own thing) however literally every time I look back at him, 9 times out of 10 he'll look away fast and pretend he wasn't looking. On the odd time, he'll hold his stare, smile, or we exchange a look of understanding. Is he interested?
Looking away quickly?
Post Opinion