Firstly i also thought that vir will once understand ritu's love! But i saw the last episode: ragini & vir प्यार each other & Ritu & Aryan प्यार each other. so,they are happy with thier partners. Hence,vir can't never understand that ritu really realy loves her !!!!!!
i think it might be possible because प्यार is that motion that never be hidden and in फ्रेंड्स it is impossible for example in this दिखाना only ragni do not want to tell his फ्रेंड्स that susmita juneja is her mother but truth can"t be hidden