Guy's Behavior

What does it mean when a guy sends picture of his friend drunk and his friend also send you the guy picture with a text 'happy ever after'?

The college I go to there is this two guys from my course. Luke and kai they are really close friends we rarely talk, we made a group chat on Snapchat for every one in the course, the two guys were quick to add me as friend. They never really chatted with me but they were quick to check my post. One day is class I thought I caught Luke staring at me from the corner of my eyes but then when I turned to look at him he pretend to look at something else at my direction. Kai also seem to look at me. After class I confronted Luke online asking him if he wanted to tell me something that I think I caught him staring at him, he said no he was looking at something else then he called me bruh. I was like am a girl and he said it was just an expression, I was really confuse. Then kai sends me a selfie of Luke just immediately, it seems they were together, I asked kai why he sent me a picture of luke, he said it was greetings then almost immediately Luke sends me Kia picture. I was so confused. Kia sends another picture which seems like Luke was excited or rejoicing over smth and he texted happy evey after. The text ended there because when I ask what it means he didn't respond. After two weeks, I, Luke and kia were kept together in a group, it felt like Luke was ignoring me, after college Luke sends me a selfie of drunk Kia with alcohol in front of him. What kind of games are they playing?

What does it mean when a guy sends picture of his friend drunk and his friend also send you the guy picture with a text 'happy ever after'?
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