to you and not to its cage mate. actually, this applies to almost any animal that you adopt (except maybe dogs, who love humans more that humans love humans!) they will bond better with you if they don’t have anything else to bond to.
this is a mistake that many new owners fall into. they love their pet so much that they want them to have an awesome home. the trouble with this is all the places to hide! you will never tame a pet who lives in this home. just the time alone of finding him, then taking apart the cage to catch him. as he is hiding from you 