I guess Angad is not acting with Mishti....I think he really came back for vengeance with all-Kripa who left him when he needed her,Karthik who wronged his own brother,Prithvi who played a dirty game and killed his best frnd, Josh.......It was Mishti who always believed him and supported him no matter what happened.So I guess he is not cheating on her or using her as a mohra......My guess is that he couldnt control his heart which was still full of love for Kripa......I guess thats the reason why he is all tears after hurting Kripa.....He came back to punish Kripa for what she did and accept Mishti who always loved him not caring for the circumstances.But he just cant deny the fact that he still loves Kripa.......
All of Ektas serials work on this principle.....So I guess she is using it in KYPH too......She will never let two loving hearts to unite....Take the example of Kasautii Zindagii Kii....She never let Anurag and Prerna to get together.....And besides Angad can marry Mishti for the same reason Kripa married Prithvi and later Ekta can kill off Mishti and let them unite.......And Mishti will return of course later as the villianess...đ¤˘But my guess is that Angad and Mishti will marry....even though I badly want Angad and Kripa to get back together.......But dont worry Ekta hai naa....She will never let it happen........đ