I didn't think of him with rhea till now but imo, it'd be cute. If him and rhea get together, maybe he can help develop her personality in a way that she has more autonomy and self-belief. Rhea seems like a nice girl till now so I do want good for her but Ahaan doesn't seem like the right match because then she'd just be forced to live like this all her life.
I doubt it will happen but it would be cool for rhea to have a partner who helps her explore her own likes and dislikes.