One ordinary night, you were kidnapped by his troupe and taken to one of the abandoned, gloomy apartments in Meteor City.  
As soon as you wake up, he will explain everything to you - how he wants to accept you into his Troupe and how much he adores you.
He will always be cold, but will never hurt you in any way. 
While you and he are spending time with Chrollo, his troupe got rid of all the evidence, simultaneously plundering banks and auctions.  Very soon, his troupe will return.