Horoscopes are not checked when we are friends, we check horoscopes only when we get married. The reason being, friendship is one of the many things that are looked at between the couple when they get married. The statement on the internet which you have come across apparently is from someone who does not understand the seriousness of horoscope matching. Rajju dosha cancellation is checked from both the charts.
Blessings,
Navneet Khanna
Astrologer