The statement 'Yeah, me' is very intriguing. At first glance it comes off as a very confident and humurous deflection that serves to deviate the topic from the potential romantic liaisons of the Virtual Youtuber that is being spoken of.
But if you look deeper, it becomes clear to see that it is in fact a form of disengaging with the reality that there is no real rebuttal to accusations of your oshi having a boyfriend.
It is as they say 'cope'.