So he saved her as he knew Abhi never wanted Geetu dead...he just wanted to drive her to madness...that's why he pretended to be a suspicious character after coming back...so that Geetu gets all the more confused between him n Priyam...
Probably Ragini might have also went through similar madness...that's why Geetu was made to go through all this...
He never loved her but I think he wanted her insane and not dead...
My Pov...