Now,as we are on topic of Adini Consummation, It seems Makers kept it ambiguous n let audience decide to pick which they prefer.
When Malini asked Adini whether he n imlie were intimate, Adi said he respect both of them with that I think he just clarified that he didn't cheat Malini physically. And with Imlie he can't move forward like that without giving her status of wife in society.