<human>: Condense the text into a few key points

Hi! I recently started classes at a school that is primarily for adults but has a 19-21 program. I am in this program and attend a daily math class. It's been great so far. The boy who sits next to me usually friended me today on Facebook, and this is where it goes downhill. I'll preface this by saying I am a very private person, and have not had extended conversations with many people in class, as I am somewhat reserved and shy.

I clicked on his profile, and his picture is him nude with a pillow covering his genitals. Okay whatever, feel free to flaunt your body. So i click through a few photos and come across a photo of my feet, with the tagline **"omfg, daddy likes those sexy little toes."** 

The photo was very obviously my feet, I recognize the sandals and my backpack is beside me in the shot. I do carry extra weight, so many comments were made about "eww! gross! fat legs!" in addition to telling him not to photograph random girls. So at this point, I'm a bit stressed out.

I send him a message, simply asking "Why is there a photo of my feet on your profile?" and he responds by saying he has a foot fetish, he never expected me to see it, i have nice feet, etc. I tell him its a violation of my privacy and its disrespectful to me making sexual comments about me publically. He insists I'm overreacting and I'm "such a feminist!" ....

Conversation lasts a few more minutes, he's trying to tell me how much I am overreacting and how I need to relax, he did nothing wrong. I tell him to please leave me alone and stay away from me, and block him.

So, what do I do at this point?
Was having this conversation with him sufficient?
Should I speak to administration at school? I'm leaning towards *yes* because he doesn't understand what he did is wrong. 

I appreciate anyones opinion, thank you!
<bot>: kid who sits next to me has a foot fetish and posted a photo of my feet on his profile with sexual comments. when confronted, told me he did nothing wrong and i'm overreacting.