AB is referring to an incident during college where I was briefly tempted to allow a homosexual to perform an act he had offered. I never took him up on it and never had another opportunity, nor wanted one. I didn't actually want that one either; it just came up at a party, out of nowhere.
But the real point is, it happened before I was saved. Paul addresses in very specific detail how people who are saved are no longer what they once were. In my case, I was never remotely an active homosexual or anything close to it. I was simply tempted by a one time offer that I declined.
If AB wants to argue that, by my own definition, that incident made me a homosexual, then I was a homosexual for the 2 minutes I'd considered it. But once I became saved, all that was gone along with everything else. I am now a new creation in Christ, and the thought of that incident and many more - all involving women - are now thoroughly repugnant to me.
That's the part AB always ignores whenever I bring it up because he doesn't want to believe God can and does save people.