A girl finds me attractive, but isn't looking for a relationship. Haven't had sex yet, but we do make out when we're out drinking and bump into one another. I slept over at her place few days ago, but we didn't have sex because her flatmates were home.

While we were making out and chilling in bed the morning after, she did say something along the lines of "You know we're just having fun, and that I'm not looking for a relationship, right?". I shrugged it off and threw a joke in the mix.

Would it be a good idea to ask her "So are you ok with me seeing other girls?"?

My take on it is that it proposes the idea that I could lose her at any point and it wouldn't really affect me. So in a way I'm saying that her value isn't high enough for me to stick around.

Edit; she doesn't want a relationship with anyone (fresh out of her third bad relationship), she doesn't have one night stands, and she doesn't have sex when drunk for personal reasons.