1) Maan- Geet (Geet Hui Sabse Parayi) ' there is no doubt that it is the most popular on screen couple of TV in 2010.
2) Manav- Archana (Pavitra Rishta) ' this pair too had many fans.
3) Naitik- Akshara (Yeh Rishta Kya Kehlata Hai) ' another hit pair of 2010.
4) Krishana- Pratigya (Mann Kee Awaaz Pratigya) ' this pair too impressed everyone and earned many fans.
5) Samrat- Gunjan/ Mayank- Nupur (Miley Jab Hum Tum) ' though the show went off air, but still both its lead pairs are one of the most popular on screen pairs of 2010.
6) Ishaan- Suhana (Sasural Genda Phool) - this cute pair too has charmed the viewers very much and now every one is looking forward to the kick start of their love story in 2011.
7) Jagdish- Anandi (Balika Vadhu) ' this year we had grown up Anandi and Jagdish in the form of Pratyusha Bannerjee and Shashank Vyas respectively. With their entry, the viewers got to see some amazing chemistry between Anandi and Jagdish.
8) Ranvir- Ragini/ Alekh- Sadhna (Bidaai) - Bidaai too went off air this year, all its viewers will definitely miss both of its lead pairs.
9) Anuraag- Taani (Tere Liye) ' This pair also charmed the viewers and got many fans.
10) Datta- Nakusha (Laagi Tujhse Lagan) ' this pair too impressed everyone.
http://spicy-mix.blogspot.com/2011/01/top-10-indian-telly-couples-on-screen.html
I got this from TL forum..so credit goes to the TM on TL forum :)