Well, LimpWeenie,
Many things can affect erectile function - food, drink, exercise, age, but above all, PERFORMANCE ANXIETY. You don't say how old you are, but if you're over 50, chances are you just experienced your first episode of ED - and it happened to be with your wife. My advice would be to go se a physician and make sure you're not overweight, not a smoker, in good health, an exerciser, get great sleep, don't stress out too much at work, and above all, don't get your skivvies in a bunch over a "top reviewed VIP provider." Sex is not a "thinking" activity, it's strictly monkey business, complete with grunts and really low-brain limbic activity. The more you analyze, fret and use your higher brain function, the more chances you'll have at not getting it up. As for the provider - who cares, it's some chick that bangs good for the money - it's not the Madonna [to flip things around a bit]. You don't have to treat her like dirt, but you don't have to make her feel so special that your penis gets all "shy" either. That's why I advise men who do have a touch of performance anxiety to book with the "girl next door type," not the homecoming queen you couldn't fuck in high school. The more they sit on a pedestal, the more the penis bows - in the wrong direction.
If your physician decides it's ED drug time, then so be it - go with it, but try things out with your wife first, just to make sure the hoisting mechanism really is working.
Don't overthink things and you'll be fine,
The Love Goddess