Hehe.. great topic! I totally feel, its a mixture of both.. i mean, everything builds from respect. its the foundation of both friendship and relationships. As for Guddu, runjhun feels like..he has to "prove" to her that he is what he 'spells' out to be! she feels like.. unless she places a kind of a challenge for Guddu, he isnt necessary gonna have any solid reason to stick around..which is kinda true, if u think about it..i mean.. this challenge thing kinda is acting like a thread or maintaing the spark between them.. coming from Guddu. Runjhun on the other hand, she enjoys the idea of having Guddu around, esp. when he gets and acts all caring towards her. She loves and enjoys it alot, but is scared to show it, as she feels showing it would mean that the challenge for Guddu is over. She wants to keep the candle burning.. strong.
Guddu sees runjhun as someone whom he feels he has to live up to.. sorta. he often tries to win her approval on many things, and its on the bases of that, he does things nowadays.. its a very subtle and hidden bond between them. Its fun to watch and observe. friendships and love often blossom best from such scenarios... :D Long Live Their Friendships! hehe..