Is it normal that i smoked shisha with my teacher in his classroom?

I KNOW WHAT YOU'RE THINKING!!I'll explain how it happened here. Today I had a class with him (it was supposed to be a drawing class) but it isn't really a class because he's not teaching me anything (he tutors me in drawing and geometry). And today he spoke to me about it, because he feels guilty that my parents are paying and he's not teaching me anything (I am there basically finishing my school work because this year I feel really depressed and can't seem to get anything done at home. So I thought he might encourage me! Which he did!). Like I'm just sitting there drawing and he'll be doing random things. Sometimes he chats with me a lot, like I'm not even being tutored and I'm just his friend (oh btw I have the biggest crush on him, and I would never do anything about it, he's old enough to be my dad and has a wife and a kid. I'm not that shameless), and well, he doesn't really teach me anything about drawing! So he told me to talk to my parents about it, you know, to go only one hour instead of a whole afternoon or to even cancel the classes. Now, as I'm a stupid teenager and have raging hormones, I immediately thought he didn't want me around (and upon seeing my face drop he added almost instantly that it wasn't about him not liking my company, which he did, but instead that he felt very guilty for making my parents pay for our time together) and so after about half an hour I started feeling really depressed. Then I remembered all the shit that went on in my life and how no one really ever wants me around and always despises me, so I tried to take the razor from my pencil sharpener to go into the bathroom and cut myself (I didn't because I couldn't take it off) and so I kept drawing by his side with my head ducked and fighting off tears. And then I was texting with a friend that helps me go through these moments and I suddenly start tearing up and he asks 'Are you ok? What's going on?' like really concerned and I was sobbing and saying oh it's nothing... and then he insisted it was and that I should talk about it, and then he asked if it had been something he said (it had, but i didn't want to reveal it). and then he closed the studio door (it's like a shop, turned to the street) and said let's go inside, I don't want people seeing you like that and we went and he asked if I wanted to smoke a cigarette, but he didn't have any tobacco to roll some so instead he took out his hookah and made shisha for us o_O it was so awkward! and then to stop feeling so sad and lame I smoked a joint, I was going to offer him but I didn't because well, he's my teacher, duh. And then we sat down on the couch smoking from the hookah and he asked me about what was going on and I said I was feeling bad because of something he said, and he assured me that it wasn't that he didn't want me around and talked to me... honestly i can't remember much because I was a little stoned, and then he went and showed me a video of his son and everything... he's the sweetest or is he a creep? o.O

TL;DR - I was feeling very sad and depressed because of something my teacher crush told me, and then he told me to go inside to smoke a cigarette but we ended up on his couch smoking from a hookah and talking like two friends. And then he let me stay a little more with him till he went home and gave me a ride to my house!! God I don't know what to think of this. Is this behaviour normal for a tutor? Keep in mind he's an artist and he's 37, and I'm 17.