That Third Party Question

On a Sunday afternoon where you have guests in your humble home, a guest would ask this question which made me place in a complete shock: "Are you really together?"

That question was asked in front of everyone, including my partner.

It has been a fact to my partner's friends that we had a bad split up and we got together again soon after that break up. We never looked at it as "together" but more of an understanding, in which for me, I am treating my partner as my long term partner.

I immediately went to my room and paused for a silence. Then my partner went to my room and hugged me in my bed. 

We are really together, we have a valid relationship. End of story.