For context;
He developed strong crush on me, then I also (unknown to him), developed feelings for him. We spent weeks together at night chatting and talking non-stop. We kissed passionately, fiercely for 2 nights, and the week after that, he told me that he isn't ready for serious relationship (after I told him that I had feelings for him), and he pretty much friendzones me. And he mostly ignores me, only look at me shyly. When he was with me, he sweared when he saw a Whatsapp notification of a male friend of mine trying to flirt with me, in which I never responded to his (my male friend)'s message.
Well, after he friendzones me, there was this one person who made me upset (but it wasn't a huge issue at all, just that there was this optional class and he didn't want to attend, and I was responsible to call people to the class), and then I walked past by him , and we were alone in the hallway, and he stuttered a bit and accidentally said "fuck you" to me, but then he corrected twice saying "fuck him". And I just giggled , and nodded because I thought it was a silly thing to curse at, especially for a minor issue.
Then some next day, we were again alone in the kitchen, and he cursed again because the trash was full. It was understandable, but I am not sure if he was actually cursing directly at me, or other people who didn't do the kitchen duty because it was just me and him. But I was shocked because he's being more open to me with swearing since the day I giggled when he said "fuck him" to the guy that for him, irritated me.
But the thing is, whenever we walked past each other, we would make a brief eye contact, and he just look at the ground, and smile shyly. And he would stare at me from distant when he thinks I am not looking. So one day I was wearing glasses to make sure where he was looking at in the distant, and yup, he was staring at me while smiling by himself.