They don't love each other yet, they are only attracted to each other at this point of time. Hopefully Reyansh's mom makes him understand that if he truly loved Aaradhana he couldn't have ever done what he did. I don't think Aaradhana is wrong in lying as she simply could have thought that it isn't necessary to carry everything that's happening in her life to Reyansh (I edited my earlier line of no trust from her side but she wrongly trusted him too soon putting higher stakes at risk). Reyansh is totally on the wrong, he really doesn't respect women because of his lack of trust issues. Does lying equals to cheating!! No but its an yes in his terms and its hard to be in a relationship with such a person. Its good for Aaradhana that he put out his true nature so early in their relationship, she can get good riddance of him once and for all though the price she would pay for it is a bit high, she could get effected both personally and professionally.