Yeah they did consummate! They had Aahil topless and pulling her into bed the morning after and trying it on again! He got very handsy as well the next day, pulling her onto his lap! They kissed in the garden where even his Abbu was in the car in front of them! It was pretty clear things had progressed!
When fake Sanam brought her fake pregnancy report, Aahil thought it was HIS Sanam's and was happy. So that was a clear indication the consummation happened. I don't think they wanted to show some full blown version with songs etc, coz Tanveer drama had just ended and it was not a nice time in their life. But they definitely consummated and they implied it!
Your right, even I think something much bolder and hotter is needed, and hope we get it.