Actually, I don't think he'll try to rape her just like that since Daima will be there to "guide" him. She'll probably tell him to use Reva and Yash against each other so he and Daima can benefit somehow.
Since Aryamaan will be attracted to her and he is the type of person who needs what he wants he will try to take Reva away from Yash. He has the advantage over Yash because Reva believes Aryamaan is the good guy and hates Yash instead. He may think this way he can have Reva, hurt Yash, and not get in trouble with Ranima like before. Okay, he might get in trouble with Ranima if he tries to break Yash's marriage, but not if he can mangage to make Yash look bad somehow.
Of course, Aryamaan and Daima won't succeed in whatever twisted little plans they come up with when he returns, at least, not as long as Reva can keep her cool! š¤