Tara will agree to marry Arjun may be because deva is angry and she can't ask his help too. He might call her gold digger and opportunists too which will force her to say yes for marriage. when deva will try to confront her she may say she loves arjun as she is super angry on mr malik
uske baad deva arjun ko makkhi ki tarah udhakar shadi karlega 
a possible track that could come up is Arjun finding out that mr Malik is Deva and him keeping this from Tara. I think it’s clear from today’s episode that he sees Tara as more than a friend