I did not see this scene as a move towards a jodi...if anything, he reminded Sugni of what his uncle was trying to do for her. This evidently will increase Sugni's loyalty towards him making it harder for her to stop admiring him and NOT aligning with her mother. Moreover, his supporting her was pivotal in letting her stay in the mansion - if he had issue, then it would not make sense and Jiji would not be forced into giving in. Aditya actually does not respect her love for TVS - he questions it's authenticity by comparing to Amrita's (a good sign) that they had known each other for a while...His comment to Sugni that she was young and could get fed up with TVS made her question her love for him...further pushing her closer to him.
I never saw this scene as laying a foundation for a future love story between the two of them but as a push for Sugni to get even closer to TVS thus making her decision to stay at the mansion valid and with TVS even more stronger. Now Sugni is going to prove even more that SHE does love TVS and that her love for him is not just fleeting moment but a real intense and loyal love.