Love and respect go hand in hand. But I think it is wrong to always assume that respect or admiration will necessarily morph into sexual love.
There are different kinds of love too. Love for all human beings, all life forms, love practised by Buddha, Nanak, Kabir, Jesus etc. There is love for teachers or parents. Love for friends or siblings. Films and TV serials make it only about love related to sex (same sex or opposite sex)!
I found Gauri's reasoning rather perverted. Though I think reason for this perversion has got more to do with J-A's marriage than a generalisation.
There are many persons who I admire and would even stand up or fight for. But I may not necessarily ''love'' them or lust for them!
For a man like Jagya, one may never know his true feelings. He has his own definitions of respect and love. One can't ever tell who he respects and how he respects! It is natural (oh I am talking like Dr. Jagat!) for Gauri to have doubts on a compulsive liar and spineless, unpredictable man like him.
I still maintain that she is staying with him, sticking to him more due to desperate attempts to resolve her childhood trauma and fulfill bachpan ki adhoori zidd. It's not just ''love'' or attraction after growing up which makes her stick to a scumbag like him. Her fixation and obsession have more role to play!