If there have only one quality I can ask for my girlfriend,I think it is to accept change.
When we are in search of our partner,we usually put forward many demands.But the problem is the more we ask for our partner,the lower rate we can find our partner.
And if we are a person who always pursue growth,many of our ideas will also change as we grow up .So in the long run it makes no sense to make some fixed demands for our future mates.
The best way to counter change is to change.
Compared to other qualities,the quality of accept change is the most important for our partner.The other version of accept change is reasonable.When we faced differences with other person,we can talk and listen to them.When we find we are incorrect,we can change rather than being stubborn.
When we find a partner,we could be different in many aspects.But it is not scary.If only we always talk and listen to the other,our view will be changed and become the same.
So find a partner who is reasonable and accept change.Talking and listening.