Lifelong learning, self investigation, being fully engaged in life, and living a life of purpose, IS the fountain of youth!
Shared values are far more important to me than shared interest.......... values define who you are, interest define what you enjoy. I always enjoy being exposed to new ideas and activities (I'll show you mine if you'll show me yours), who knows, perhaps I will gain a new interest,... and/or visa versa.
But,.. if your values don't include: concern for the suffering of others, caring for the environment, showing respect, having empathy, feeling gratitude, developing trust, & living with integrity, it won't matter that we enjoy the same music, films, activities or food!.
Of course having a sprinkling of shared sensibilities helps...
Oh and "Chemistry"?..... elusive at best...... perhaps a sense of connection? In my experience chemistry evolves as connections come into focus..... we each like what we see, and we both desire more and more ...... and more!!! .....well,... you get the picture.....(do you?)
Being fit feels good! try to work out daily. When I can't make it to the gym I make sure to find ways to integrate rigorous activity into my day.
Love the great outdoors, it's the worlds largest gym!
Being in nature restores my soul and brings me clarity.