I sense your confusion over here... and if you are to resolve it....
Firstly,
What do you mean about your growth in this current relationship that you are in?
What is that you are looking for in a realtionship and how is this current one serving ?
What would make you think the next girl tou meet she is the one for you ?
Doea caste holds importance to you or are you ready jump the barrier?
Next Steps
try answering the above questions to achive clarity .
Health Tips
see how you feel and contribute in the relationship you are in currently and of you think you have an idea of perfect relationship then i must say prefection is subjective to people. to find out about is this girl the right one for check with your feelings and see how strongly do you feel about her or what made you fall for her....