Hi Urvashi,

Just as simple as you can do. Give them a warning that their relation in the office premises is creating dis balance among the other guys and also negative impact on the office environment. They can be good colleagues
in the office hours not more than that.

Strict warning to them "Be dedicated to the office work in the office timings afterwards go to hell --- no issues".

Even if they don't listen..... just fire them...

thanks
santosh..