Plasticity of Human Relations

Hello everybody, I was wondering about how persons behave in regular life and in the loving couples about. I wonder if the plasticity or maleability of our emotions and behavior in interactions can be "Tuned Up" when a first approach happens, when we discover the attitudes and minds of our counterparts. Everyone dreams about to find a tuned up mindset as well as physical atractions, stability, a good way of life. But our inner world always prevails in our relations..... Who is able to have the attitude to "Tune Up" with your next life partner???? Opinions are welcome !!!