How to relate a question to a content page ?

Hi,

On my website, I need to have an (optional) relationship between some of my pages and some questions (it’s a 1-n relation, so my users can potentially ask a few questions related to a given post).

If I was developing this whole system from scratch, the natural way to store my relationship would be for me to use the “post_parent” column of my question to store the related page post ID.
However, I don’t want to be stuck if, one day, AP team decides to use that column for another purpose… Is there a risk for me to use that column in such a way ?

Thanks in advance