ok this this my take on this :
based on what we know so far, Kabir is the one who is NOT getting any dhokha but only giving it...
See he saw an orphan girl who fits his mohra profile and he chose her...he created a lovey sweet kabir persona for Riddhima and she fell in love with that person or should I say she in love with the idea of love and family and a prince charming...
But the Kabir Ridz fell for never existed...so when a relationship starts on the base of a lie, how can anything about it be real...so those feelings, that love nothing was real...Ridz only thought it real and that was her ignorance...she didnot know what real love looks like...So she is not betraying kabir, she has just dropped her rose coloured glasses and is starting to actually see real things...
And Kabir...he is using her as mohora, he created a lie, a drama with her then how can he even expect her love to be real...it was all an illusion Kabir...vansh is a real person, who has created all sorts of real feelings inside Ridz....fear, hate, dislike, confusion, bewilderment, concern, caring, like and finally if what CVs are showing is real, then Love...and this time its all real...Vansh never had any misconception that Ridz is an innocent perfect chick...he knows she did have an agenda but he still fell and he basically said today if u are ready to move on with me and be with me from now on then ur past dont matter...and after dealing with all her negative concepts of vansh Ridz too is slowly realizing vansh is not such a bad guy...she is caring for him...realizing(subconsciously of course) with him she actually has a home, a family, the potential of real love....So yeah the real thing is winning over the fake idea....It was bound to happen...
kabir is ripping as he sowed...he doesnt get to complain...if Ridz actually felt any real love from him her heart would remember that I think...
Of course all this is based on the assumption that Ridz is really an orphan girl who got trapped in Kabir's game...this is Immj and God knows what the writers have planned...😆