I was walking out of sixth form this afternoon and was just on my phone and a guy came up to me from behind and held onto my shoulders then said "hey, *inserts name*" I've seen him around the corridors but havent ever spoken to him before so i was Ishocked/scared at why he did that. we started talking and he asked how Im finding my subjects this yr, how i am, and he kept talking about a lot of weird things but ive never spoke to him before ever and he's a yr older but resitting and the older students dont really mix with us in school. after walking for a while i told him i was taking a different path so i said bye then he said he wanted to look at my phone before i went and i didnt want to give it to him because i didnt know why he wanted my phone so i kept laughig and telling him that its fine and he didnt need to look at it as it isnt the best phone in the world, he told me it didnt matter and asked again so i tried to say the same thing, then he just laughed and said "okay bye, ill see you later" and walked away. was i mean? I can't stop thinking about what if he needed to call someine urgently and i was too focused on how rubbish my phone was to help him out. i keep trying to convince myself that he scared me and weirded me out but i feel guilty since it happened, any advice on what i should do, i might see him tomorrow, should i apologise or pretend i never did that?