SUBREDDIT: r/relationships
TITLE: I [20M] turned down sex with my date [21F] after hooking up on the first date
POST: I met a girl on tinder and texted her for a few days before meeting up. I ended up going to her house and hanging out with her and her two housemates and drinking for a little while before they went to bed.

When it was just the two of us, we went outside and just bullshitted and talked for hours. We were both obviously into each other, and when I was leaving we started hooking up at the bottom of the stairs. She kept dropping hints that she wanted to go upstairs until I said that I should leave.

Good or bad idea? I like her and I didn't want it to turn into a quick thing.
TL;DR: 
Met girl on tinder, had good time and hooked up, on the way out turned down sex to try and establish something. Good or bad idea?