Well..if she was his gf in the PV that doesn't mean she's his gf in real life, but the funny thing is that fangirls would still hate her just because she was with Ruki for 3 minutes in a PV, and that's just crazy. XD
And of course you can still admire them even if they have gf's. I don't care if Aoi got himself a wife and 8 children..I would still look at him and think "I would like me some of that!."....or something...you get the picture. XD