<human>: Give me a shortened version of the text

So as the title says, I met my colleague's sister last night and we both had a really good time, but I exercised a painful amount of self control and didn't make a move on her, although I definitely made it clear I was into her as well. In hindsight I feel like a dick for being that confusing and unclear, but at the time I was drunk with good intentions.

The reason I didn't make a move is that I've had several experiences mixing work and dating in multiple ways in the past, and it's always ended from awkward to pretty horrible.

I get on really well with her sister (my colleague), but I work with her closely every day and her personality type is that if anything went sour between myself and her sister, there's only one side she's taking and logic wouldn't be involved in that decision (others have agreed I made a good move on that basis). 

That would make my work situation really uncomfortable. Even the lingering thought that my colleague knows what's going on in my dating life to that extent is distracting in my day to day work life.

So despite all of that...I haven't enjoyed a night out with a girl as much as last night in...literally years, and I'm only 23. I want to figure out a way to make this work, and I kind of want to do it quickly because I imagine there's not a massive window where I can fill her in on this and she understands before I float into "didn't make a move" territory.
<bot>: How would you feel about not telling your sister about dating her colleague for a while? Or can you think of any other way to make this work? Thanks for any help