OMG, you just put this together very well. Ryan just clinched it. Some other bits of circumstantial evidence:
1) Veronica was talking about staying in with one of her friends messing about on Google video on a Friday night. Sombody like Veronica alone on a Friday unless by choice? I think not.
2) They are both Mac fanboys/fangirls
3) Veronica's appearance on the Engadget podcast. V tried to be really cool, saying that she had mentioned it and "they" thought it would make a good voice mail question. However (in hindsight) no mention of where the conversation took place.
4) Ryan trying to be cool in the Engadget podcast. When you are first seeing somebody, somehow there is a temporary short circuit in the logic parts of your brain, such that you think that nobody knows about your relationship. Of course, this is completely incorrect, and those around you (once you come clean) invariably say "Um, yea, like we knew for the last 3 months, it was kind of funny watching you try and hide it." Point here is: The Venn diagram of the Engadget Podcast and BOL listenership would have so much overlap it would look like one circle. So, Ryan thinking "Nobody will know" is pretty typical.
Although not definitive, the evidence is piling up. We want a statment. *shoves large microphone at Veronica* OK, Miss Beaumont. You have been romantically linked with a rival podcast, and are being accused of being an Engadget mole at CNET. Do you have a public comment?......