<human>: I've just got out of a long relationship so am a bit clueless about the etiquette surrounding sleeping with new people, and need help.

My situation: 

Saw a girl that I kind of know and with mutual friends at a few parties/nights out over the last month. Made out with her one night and the week after ended up sleeping with her. We have been sporadically texting since a bit before we first made out. 

My question:

I don't want a relationship right now, but at what point am I obligated to tell her this? Is it OK to keep texting, flirting, hanging out on weekends and sleeping with her when I know I don't want it to go any further? If so, at what point should I make my intentions clear? I have deliberately kept contact not too frequent so I don't seem super keen. I feel like saying something like this is responsible, but it also assumes she wants a relationship (she might not), would make future sex less likely and could seem a bit upfront and hasty.

Can you condense the text into a few key points?
<bot>: Slept with a girl. Don't want a relationship but would like future sex. Don't want to be a dick because we have mutual friends and because of morality.