No doubt that its going to happen...RK-Madhu going to separate, RK going to break Madhu's trust n heart...Madhu will be shattered...complete break-down and every one related to RK-madhu will be shocked seeing the OLD RK back and his intentions (as he is showing).
But thinking and analyzing whatever they have shown in episodes till now, Am damn sure that RK is not doing this just for his revenge. He truly loves Madhu no doubt BUT there is something else in his mind, some circumstances which forcing him to take such step. May be its related to Madhu n her life.
Madhu is RK's life and he cannot risk his life. BUT it will take some time...say 2 - 4 months to unfold the track and actual reason for RKs deeds where CVs will surprise us with something else regarding RK and Madhu which we have never known.
Just a thought.