You paid for it and went to sit with your friends

Sitting next to Kathy, with Marcus and Seeyla in front of you, you two talked about movies and series that you both liked, she was really a nerd and you loved it about her. Both weren’t paying much attention to your other two friends, who were smiling as they looked at both of you. Out of a sudden, Marcus said:

“Hey guys, you two are good at math, right?”

You and Kathy, after being pulled out of your conversation, looked at him and nodded, so he said:

“Well, Mr. Anderson is fucking my ass, so, can you guys help me and Sheyla out? We could study together tomorrow, don’t you think?”

“Cool!” Kathy said, “Where should we go?”

“At the library, what do you guys think? It’s quite…” you said.

“Nice, there is a coffee shop near there, right?” Sheyla said.

“Perfect! So, at 3 p.m., at the library?” Marcus said.

“Ok!” You all agreed. After the study date was scheduled, you all kept the conversation, you didn't notice, but Kathy kept looking at you the whole time…