AI

It had taken you a while, but you had perfected artificial intelligence. You would only be able to talk to it through the computer at first, but eventually you might build a sexbot body for it too. But first, you should test it some. When making it, you had thought about a number of ways you could customize it. You could have a simulated body of some sort, giving it control of your computer screen, so that you could see it. You could also choose to have it communicate with voice, or with text. Obviously the simplest idea was just text, but then again, you hadn't locked yourself in a room for months with almost no social contact, building yourself the perfect girlfriend, because you liked to do things the easy way.

If you just did voice, it would be like having a phone call. It might be very realistic, but if there was even a slight problem with the system, it would just be awkward and weird. Just text would be like chatting someone online anonymously, but it wasn't a whole lot. Then again, it could make a good test of the AI itself. If you did just video, you could just play with her using some of the tools you developed for that, seeing how she reacts to being spanked and fingered. Or you could combine video with text to do something more like a visual novel, nerd that you are, you've played some of those, or maybe make it more like a camgirl sort of thing. Of course, video with voice would be the most realistic, like video chatting.

You wish your choices were so few, but you also had to decide what she looked like. It was more necessary if you were doing video, but if you were chatting and asked her what she was wearing and got N/A as a response, you'd be pretty disappointed. You could just have her look like you, maybe like you but a girl, that way you could just make it with ease from pictures of yourself. Or you could put in the data for a big breasted MILF, or, while you're thinking about tits, a blonde bimbo. Oh, or the regular girl next door type, or the fashionable popular girl, or maybe a thicker, more realistic woman, a nerd like yourself. You could also try a man, of course, although you didn't have as many ideas for that.

And even once you've chosen that you'll need to pick out a personality, submissive, dominant, loving, innocent, perverted, shy, snobbish, patronizing... you didn't bother with the math, but there were a crap ton of choices, and you wanted your first try to be perfect.