Passion

I'm beginning to wonder if I'm too old for passion...
is it reserved for the young and dumb?

Is there an age limit for expecting to feel passionate about another
and to have that passion returned?

Maybe I need to re-examine my expectations?
Should I not expect

to feel my heart beat harder when she walks toward me?
to think of her and have my thoughts be x rated?
to feel like she is so important that I can't breathe properly without her?
to feel like giving her my heart and know that she will keep it safe?
to want to spend time with her...both in and out of bed...memorizing her every feature?

Maybe I don't want passion if I have to change my definitions to make it fit.