Hi to answer ur ques I think twist is that RK's ego is currently overpowering his true feelings, and Madhu is so hurt that wants to cover her hurt by brave face.
RK did not expected that Madhu has reached to his core and became his love and life and still denying and wants to see her shattered, but moment Madhu breaks down his true feelings comes on surface and he gets more angry at himself with frustration of not understanding his true feelings.so this is a twist that not all bad boys turn good just by taking one bullet and love, they need to realise themselves.Since Madhu has left hasn't been single day he has not thought of her, and this bothers him most. and he thinks this is only because she is in front of his eyes so he wants her out of sight out of mind...but sad but true that not gonna happen.and on the other hand Madhu wants to face him thinking she can face him and clear him from her system. but again she will fail too...thats my view do share urs too...