<human>: A bit of backstory : I've liked this guy *ish*  for about a year and recently we've been a lot more touchy feely as in we hold hands and touch each other's legs when we're sitting down together but I wasn't sure whether or not he liked me or not. He's also taken me out to dinner, said I'm beautiful, invited me back to his place and cooked, and asked me to model for him (he's into photography). 

On Monday, invited him to my school's year 11 social (kind of like Prom for America) and throughout the night he always his arm around my waist, would hold my hand, lend me his coat, would place his hand on my back when we were walking etc. Essentially, I let my guard down quite a lot and really enjoyed the night talking to him. But halfway through he asked me about past relationships and I ask him about his and he started talking about a girl that he's been talking to a lot. He showed me his call logs with her and how he walks to school with her and how he wanted to be in a relationship with her, all whilst his arm was still around my waist. Obviously, this came as a shock to me considering how he had been acting the whole night and before the night and my guard immediately went up and I kind of moved away from him physically (we were sitting quite close together) and shrugged his arm away. 

My problem is that I don't think he got the message because for the rest of the night he continued to touch me and I don't know how to break it to him that I don't particularly want to do any of that since he only views me as a friend and it is hard for me to be that close to him physically but not emotionally like I thought we were. At the same time, I don't really want to tell him how I feel about him since it has the ability to ruin our friendship, or at least make it awkward.

Basically, I need help on what to say to him and how to set boundaries with him. I don't want anything physical anymore, but I'm afraid that if I tell him the reason why, it will ruin our friendship.

Can you provide a brief overview of the text?
<bot>: Guy friend and I were pretty close, turns out he's into another girl, need help on setting physical boundaries so I can move on