Why does he keep saying that?

I like this guy in my AP chem cl. We sit at the lab tables in igned seats and he's next to me with two other people. A few weeks ago this obnoxious guy made a pretty funny joke and I laughed. My crush goes "woah even Dana(me) thought that was funny" I thought that was kind of weird but forgot about it. Then today one of my crush's friends comes to the table and my crush goes "hey go away, even Dana doesn't want you here." Why does he keep going "even Dana..." ?