Hi Guys

Looking for some advice on this... I have spent some time lately hanging around with a new circle of friends. We've done drinks a few times and brunch and stuff. There is a girl who I like and have been toying with in this group and I want to be able to escalate things but don't want to ruin the friendship circle as i feel it could lead to more girls later...

At first i didn't really pay much attention but the last time we hung out, we had some great times just minor flirting between us. It was a friends birthday and drunkenly, I spent a bit too much buying drinks for everyone. So the next day, she texted me saying she owes me drinks! Now, im not sure if she's doing this just as friends? I want to hang out with her but not sure if i wanna ruin the friendship circle....

Any advice?