That's a lovely name by the way..
If I have to sum up the kind of love Raman has for Ishita in two lines in the coming arc of the show they would be -
Main tumhe bhool jaon yeh ho nahi sakta ...
aur tum mujhe bhool jao yeh main hone nahi doonga
The iconic line uttered by Sunil Shetty in the movie Dhadkan, is something that defines love that is beyond limits, a love that is on the brink of madness and wouldn't be stopped at any cost or any point, not unless his goal is achieved.
Raman in my opinion, would be much the same as Sunil when he comes to know about Ishita...he would stop at nothing to destroy the one who he thinks has come between him and his love - Mani would be Akshay' Ram to Sunil' Dev for Raman.
Two men who love the same woman but their love or should I say the way that they love like their personalities are poles apart. One is as calm as the surface of a lake and would ensure smooth sailing, while the other is as wild and raging as the sea or should I say the ocean, fathomless and deeper than what appears to the eye. Just when you think you have discovered everything about it, something new appears and you realize, this is a mystery you perhaps would never solve...
While, that is frustrating to no ends, it is equally fascinating...it is haunting to think this will never end, this quest to know everything. Because the more you know, the deeper you go into the depths of an ocean, you realize perhaps that isn't such a bad thing after all - to never know...because once you do, what next...how would you ever find something else that compares to this magnificence after this?
What could possibly rival the riches that an ocean holds in its heart? Certainly, a lake cannot.
Ishita who has touched the ocean, known and felt it, tasted the hunger and desire once she found and became the heart of it, will return to it.
However, before that the very ocean would burn unleashing storms and hell ...and while at it he would want to destroy the one he loves. In the end, however, the one he would hurt would be himself...for in hurting her, he would see her in pain and watching her in pain as well as being the reason she's suffering would torment him to no ends. For his own peace of mind, he would not spare her and for her suffering, he would blame and hate himself even more.
Her agony would be his ecstasy for the world to see, but it would be his hell, for only him to know.
As you said, he might possibly fall more in love with her, if that is even possible ...
But to me, he would just realize the depths of her hold on his heart, his life, his soul, his existence, all that makes him, him and in the process realize, he has as much a hold over her as she does on him...
All the while, as the world would think it is tearing them apart, keeping them apart, rejoice in its victory...the tables would be turned, when it would know, it was only celebrating for an illusion, for nothing can keep these two together or apart - except these two themselves. They need no other besides each other - to build each other up or to tear down.
The world can celebrate the victory of battles, for these two are destined to win the war.