How to show this guy im interested in him?

well there is this guy in my anatomy lab in college (super hott), and i really like him. i find myself thinking about him more and more. i've seen him like 2 times before, but i guess this is the only time he's really noticed me. he sits next to me and my partner in lab, so we all kinda work with each other. when he would have a slide on the microscope and let us look i would kinda try to get closer to him(hehe).not in a creepy way, but pretty close. i try to look in his eyes...or look at him whenever he says something. im pretty shy...VERY SHY...but i will talk to him. what can i do to show him im interested??? we kinda talk...when its about bones and how much we love them lolz