Sure, it's actually just one CG that's repeated in their galleries since all three are in it. During orientation, you need to express attraction to all three guys. When you meet Asher, select "That look of contemplation is kind of hot." When NC17 & Mafia are introduced, select "Fuck, they both can get it!" Once you've done that, skip ahead to the jerkoff sequence after Connor & Marco takes a shower. Select "Those band guys seem like they can get freaky..." and then "There's no way three hot bandmates haven't fucked..." That'll unlock the CG 🙂