Well, actually, they are just showing how ruthless and callous he is. His character is such that he bull dozes his way through life. He neither cares for nor has the time, motivation or inclination to harbor any caring emotions (courtesy of his upbringing...) Anyone who wants him (literally😆 and figuratively) knows this. He will not give of himself. His mind, his emotions, his soul are hidden in the great depths of hatred. Even his one friend, Laila, and I suspect that's because of his 'on needs' basis, does not know the real him. Right now, his survival is basic.
So his sleeping with Laila is not really a shock. It's just one more thing that he will take. As long as it gels with his plans. He will take and discard as he sees fit. Of course, all this will change when the aesthetics will enter that is, when he will fall - fast and hard for Paro. I think this is when the real story will begin. What is happening now is just the preliminaries for the actual saga of Paro and Rudra.