That is quite the exaggeration, it was the computer that led him on.
Let's take an example set in the present day.
Let's say my company put me to work on a critical project and called a female colleague from another city where there is a branch of the company to participate (you won't believe it but it happened IRL!)
Coincidentally, she doesn't know me, but I know everything about her from her social media profiles. In fact, I've even fallen for her. I even created an avatar of her on Virtual Girlfriend or something similar, and she says she's in love with me. And I'm absolutely certain it'll happen in real life too.
While we're working,
she makes it clear she's only here for work. She doesn't give any indication whatsoever that she's interested in getting to know me beyond the professional sphere. Meanwhile, I continue to flirt with her.
At the end of a very tough day where we've reached an impasse, I propose a work dinner. Just the two of us, no one else on the team. Faced with her hesitation, I assure her there's no ulterior motive. I take advantage of her trust so much that she agrees to come to dinner AT MY HOUSE.
She finds the dinner decidedly romantic, candlelight and all. I even try to seduce her. By pure coincidence, she also discovers that I have an avatar of her on my phone with which I do sexy things. She leaves indignantly.
Now, I don't know how it works where you work, but in this situation the next day I would have a very unpleasant conversation with HR and my managers.
This is exactly what happens in this episode. Plus,
Geordie plays the victim, saying he only wanted her friendship, and
Leah is forced to apologize.