I'm really digging my coworker but we work too closely for me to say anything so I'll just tell you guys here.
What's their reactions to you being around them?
They seem to laugh and enjoy themselves when talking to me.
It is nice to meet someone that you bond with.  Be careful in starting a relationship with a co-worker.  It could leads to a conflict of interest, or tension if the relationship does not work out.
It's fine, I'm the future of my company.
Well then you definitely shouldn't get into an intimate relationship with hem, then. Superiors dating their subordinate is very sketchy.