My argument is "my relationship is political because I am gay" and part of why I make that argument is because people have told me they think it's political.
So - you disagree. About what, precisely? If you don't want to believe me that this has happened to me, and happened to others, that's something only you can decide and control.
But it would be nice if you could at least assume I'm telling you the truth about my own life and experiences, and engage in debate accordingly. Otherwise just be up front about the fact that you don't think I'm telling the truth about this, or that you think I'm wildly mistaken.