is it possible to 'become’ passionate about something ?

yes i believe it is
everything accelerates.
the human mind is really easy to tame if you know the Key.
it sounds unbelievably simple and that's because it is when you want to look at it from that perspective. please read whatever i am writing here with an open mind.

tour brain is like a little baby.
consciously or mostly unconsciously it directs our feeling and thoughts, perceptions and actions.
lets take an example here.
lets say i am someone who understands very little about Classical Music. (just like a little kid does not). however, if i keep myself (the conscious and the subconscious ) in a surrounding full of Classical Music ( i want to BECOME passionate about ) slowly and gradually i will. however for this to work it is essential to have a slight inclination towards this kind of music. if not an inclination, at least not an aversion.
even if you do have a aversion towards this there are still processes that can be obtained through a more rigorous journey of the brain patterns, thought processes, thinking and learning experiences, thoughts and feelings and other cognitive processes.

ultimately, you are a PRODUCT of whatever PROCESSES you go through (borrowing and referring to the basic concepts of chemistry and operations ).
if you put yourself through specific set of processes i.e. environment , i,e, people, sounds, thoughts, ideas, words, teachers, mentors, absolutely anything. the subconscious is so strong that it captures every little detail and processes it without it coming to our notice.
if we try and appreciate this fact and give ourselves that atmosphere we can surely "BECOME" whatever we want to.
passionate, dispassionate, interested, in love, :)