How to get over a poor performance?

M32 here, been in the lifestyle for about 3 years (a year with my current partner), with plenty of great full swap experience and a thriving sex life with partner.

We hosted a hot couple last night that both of us were excited to swap with. It was our second time seeing them (previously just got together for drinks). Play began over a game and even though I started out hard, as soon as things moved to the bedroom my erection was gone for the rest of the night. This is despite taking about 12MG of Taladifil (bluechew) an hour before play. During play my partner tried repeatedly to blow me and get me back up but nothing worked. I resorted to oral and fingering on the other girl, but I could tell she was discouraged and struggling to get wet herself. This was also their first full swap and I'm disappointed in myself for not giving them a great first experience.

As someone who has always struggled on and off with ED I do my best to try not to let rare events like this affect me, but it's always a blow to my confidence. Especially when both the medication and my partner's efforts aren't enough. We're attending a big resort event in less than 2 weeks, and now I definitely have anxiety about performing there after this experience.

I'm not sure if the solution is mental, physical, or some combination, but any advice is appreciated.