Male teacher - boner?

there is this young attractive male teacher who I think has a bit of a crush on me because he stares at me a lot like in assemblies but is discreet and acts all nervous around me. I have also heard him say too others teachers that the reason I was being picked on was because I was "so pretty" which was lovely to hear. he was looking at me mouth wide open kinda of like "wow" expression then he suddenly ran out of the classroom past me. 2 minutes later we had all gone in the classroom and sat down then he started teaching us. is it possible that he got a boner I haven't thought of it till now and I dint look down there so I am not sure. but he was looking at me in that "you are really gorgeous" way before he ran off.

Thanks for your time! if ANYBODY HAS ANY PAST EXPERIENCE OF THIS PLEASE LET ME KNOW!
Male teacher - boner?
Post Opinion