Man sucks and I fucked up with my life with a lie

Hey guys!!! Hope you are doing well!! (⁠人⁠ ⁠•͈⁠ᴗ⁠•͈⁠)

I'm here to express my anger abt a boy in my class 

On first day of university a lot of students start to talk with each other, I talked with some people and him, when I went home he texted me complaining my hair and saying that he really liked to talk with me that day and more. Passing weeks we talked every day, he was very extrovert and was such a cute boy 🥺 we went to the mall together, we kissed and looked like he really liked me.

But, a few weeks later he started to get really cold with me, every time we are together he didn't say anything and is always on the phone, I try to talk to him but he always say short things in a really cold tone. I already asked about him what happened and he said it's bc I never start a conversation and bc I talked with another boy too (this boy is from ours same class, he flirted with me once and he know that, but the only thing I talk with him is class things and say hi when I see him bc he say hi first). Well, so I started to try start a conversation, I really tried but he continued the same, I asked him a lot of times what was going on but he never told me and this is making me feel guilty bc he wasn't changing even with me trying, I'm not gonna lie, I became very sad, I even cried and I NEVER cried because of a person, I don't know what to do anymore.

Edit: I talked with him by message rn, and I was so mad and sad that I lied Abt the boy who flirted with me 😩 I told him that I was telling him(the boy who flirted) everything, why I was sad and look like he didn't like it (of course) ,the moment I told the boys name I regretted but it was too late. I NEED to talk with him to fix everything. He can hate me forever. ༼⁠;⁠´⁠༎ຶ⁠ ⁠۝ ⁠༎ຶ⁠༽