Sharing Our Innermost Thoughts

We both are friends since 10 yrs. In that 10 yrs we were not in contact for 4 yrs. We meet only once. We talk very rarely. Still whenever we talk it feels like we know everything about each other. And we both know we are just friends. But whenever anyone of us tries to disconnect the other one contact even though it may be after 6 months or a yr or even after 2 yrs.
I really have a question, whether there is gonna something between us or this is just a long lasting friendship?
I’m thinking to ask this question to him/her, but then things might get awkward.