Yeah, Bakura's.. not the sharing type when it comes to these things. Noncommittal responses and lots of "not now, Anthony," brushing off. Bakura's grandmother may ask him a few times if he knows what's up with Bakura as well (since she won't want to pry directly,) and he can find out from her that Bakura just...does this every now and then. Normally after something's upset him and he doesn't want to admit it.