Its something unexpected and not sure whether they will emerge as real friend beyond game..
As of now they are together because of SANA Factor
Sid expect loyalty to the core and get aggressive if things go against (as in case of vishal) and Paras is just gamer and easy going type..not sure about his loyalty factor though he is with Mahira till now.
Paras wanted to be with Vishal just like ASIM to SID and make a strong bond in big boss but since vishal wasnt that strong Paras couldnt indulge more and when he got chance he shifted to SID side conveniently..
he also strategized to move Resmy and Debo too to his SID by doing fake romance..
need to see how long this relationship will grow