Does this guy like me, or am I crazy?

So, it's quite long, but I'd appreciate opinions and advice. One of my best male friends, whom I met like 8 months ago at my university, and who is strictly platonic to me, started talking about one of his other friends, who he has known for about 2/3 years, and also goes to our university. In the beginning, it was a pure joke; I didn't even know the guy at all, and he was just mentioning his name to me once in a blue moon.

After some time, I met the guy for like 4 seconds, and that was it. He was just known to me from funny stories, as a person who is really chill and funny, and overall doesn't give a shit about anything, but in a funny way.

Then, like 2 months ago, my male friend and I went to some tutoring for uni, and that other guy was also there. We didn't talk much; it was just wholesome overall. And this is when things get complicated. From that point, my friend started casually mentioning him from like once every 3 days to approximately 12 times an hour. It started as a joke, because I'm quite low-maintenance, and don't need much from anyone, especially in relationships, that the other guy is maybe even more low-maintenance than me. Then I randomly started getting notified about his presence, actions, and overall everything from my friend every time the two of them saw each other.

Videos, pics, explanations, even though I saw that guy ONCE at that time. My birthday comes up, and in the evening, the two of them see each other, and I get a video of that guy randomly petting a cat. As a joke, I responded something like you can send me videos of him doing that, but he can't wish me a happy birthday. An hour later, I get a message from an unknown number wishing me a happy birthday. I had no idea it was him, thought it was a random family member, and I didn't even respond. Turns out it was him. And he didn't even wish me a happy birthday when they were still together; instead, he came home, asked for my number, and sent me the message. And around that time, he started to suddenly look really, really good to me. ( I was drunk and high af, and I remember me saying to that friend at my party that I find him extremely cute, but that I can't see myself with him)

Since then, we've hung out in a group maybe like 4 times. And every time, he knew every little detail about me, and I knew every detail about him. From the most stupid things to some serious bits, I told my friend. One day, some drama happened at our uni, and my friend got really pissed, and the evening when he saw that guy, he was ranting to him for about 40 minutes. That guy listened to all 40 minutes of that rant, and told my friend he couldn't give a single fuck about that, and randomly asked what I think about some football club. Once I asked my friend why I was getting all this information about that man, and I asked him if he thinks I like him, and he said absolutely no.

Then, my 3 friends and he and I, about 2.5 weeks ago, went to our friend's house to smoke pot and hang out. He literally jokes on his behalf so I can join, and I don't even know how to describe it, like he is seeking my approval. The three of us went home on foot, and we literally walked him at like 1 am through a wood, and were walking for like 2 hours. We were walking shoulder by shoulder for all 2.5 hours and just talking and laughing. When the 3 of us wanted to part ways at like 4 am, he wanted to walk me home, even if it was like another 40 minutes away. And then when we were saying bye, he unexpectedly gave me a back hug. Once before that, when our uni group was sitting for a coffee, he stayed for 20 mins, all 20 mins we were the only people talking. And my female best friend literally told me that my eyes sparkle when I speak to that man.

He then got sick, which I was notified that instant. Haven't seen him for like 10 days, and then like 3 times in the last 7 days Ive seen him, but for like 3mins because we both got exams coming up, and our schedule doesn't line up at all.

He never had any form of social media, isn't really a person who wants to hang out regularly with his friends, even though when he shows up, he doesn't shut the fuck up. And I think I'm going crazy.

We don't chat, we don't see each other, and my male friend is just fucking dumb; he doesn't see that I'm in deep shit for that man. I would love to think that, based on all this, he does have an interest in me, but nothing is happening, and I feel stuck, but I am a person who would never ever do something risky about my romantic life.

I do not want to get hurt, but I literally think that he is someone I could see myself with. He is funny, we share the same interests, we can joke together, he doesn't get angry or let things get to him, and both he and I need minimal contact to work together.

What do I do? And how do you guys see all of this?