Guy is my tutor as I am adult learning which is why he has my contact details. Now he’s started following me on social media where I post arty type photos, and I am annoyed and awkward about it because I feel like right now he isn’t doing anything terrible, just being irritating. He likes all my photos and I don’t really want to have to go private just to get away from him (it’s not a private account... it’s not photos of myself but he knows it’s me and think he found it via my phone number?). Last week he sent me a DM about a photo I posted which I ignored. Last month he sent me a message about something I was wearing at a tutorial.
I have told him multiple times i am not interested, so now I am just ignoring him unless it’s course related. He was outrageously sexual with me when he thought I might be interested but I put a stop to that and now it’s just multiple attempts at being friendly. So nothing that bad.... am I over reacting?
I do not want to report him because I am getting close to the end of course and really just need to get through the exam - and I am concerned that if he got thrown off this course as tutor it would really affect mine and my fellow students progress and be a complete mess. We had a rocky start with tutors and just want to finish. I also do worry he’s going to pass my work because he thinks I will shag him 
In summary, annoying guy seems to have no self awareness and is pissing off woman trying to learn something.
I am considering reporting him once I have passed the exam. Is this cowardly?