I think Vansh have continuously have shown his reluctance to accept the baby. Along with that He said tumhe waqt aane par sab pata chal jayega. So obviously Riddhima will think that its his plan to abort it. Ek teer se do shikar kiya Riansh ka trust or relationship tod diya aur Baccha vi survive na kare. I liked it. Aise MU s create kar k hi leads separate hote hai. I think this may lead to separation. Vansh ko toh riddhima ab confront vi nhi karegi seedha faisla sunayegi. She will mistrust him which to me is justified varna hum chahe vi toh dono alag nhi honge.