Dulquer Salmaan is celebrating his 37th birthday on July 28. To wish the actor on his special day, his Sita Ramam co-star Mrunal Thakur took to Instagram and shared a sweet and heartfelt message for him accompanied with a bunch of pictures. Sita Ramam starred Dulquer Salmaan and Mrunal Thakur in the lead. Mrunal's Instagram post for Dulquer On Friday, …