10 points for honest answer?

Hm, I am not familiar with relationships thus, in my opinion, you should confess to him first before you do anything. You asked this question because you are interested in him right? So, unless you know what he thinks about you, don't make any decisions to prevent a broken heart. I hope my answers helped you. My opinions about him is that, he is being friendly maybe slightly interested in you. But of course work comes first so you need to understand that. ;)