I would imagine he has feelings for you... it can be a bit of a dilemma on who says "I love you" first... you know him well enough to determine if he would be more inclined to either wait and see... or take the initiative...
If he's the one to take the 'wait and see' approach... then you may have to be the one to start the conversation about how strongly you feel towards him...
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen