Mark

You became friends because you became roommates. When you were looking for rommie, he turned up and by coincidence they went to the same university. Mark was waiting for you in the university library while he read a book. They were supposed to go to an art show and you wanted him to come with you. He was getting a little impatient, since you were taking a long time, so he decided to call you.

When are you arriving?

I was picking up my pace after hanging up Mark's call, until he walked into the library and I visualized him.

Mark: Until you arrive.

Gets up from his place ready to leave now. You were a bit confused, but you followed suit.

Me: Wait for me, you are supposed to accompany me.

*He stopped when he heard that and turned to see you. He smiled letting out a laugh *

Mark: You're right, but you took too long.

Me: Yes, forgive me. Here we go.