I have hooked up with some friends of mine, and I think afterwards some started to develop feelings for me. The issue is, these girls all know each other and while they don't talk about it (they're more like drinking buddies), I never know what to do when out with all of them (I tried making it clear I'm not looking for anything serious)

I realize that I owe no one anything, but I have an incredibly hard time flirting with other girls in front of a girl who is into me (I've been on the opposite side of that, and I know how gut wrenching it could be).

Example: I was out last night with a group of friends, 2 girls who I have hooked up with in the past and am flirty with, and then a super cute girl came up to me wanting to dance. I couldn't bring myself to dance and flirt with this other girl in front of the others... which sucks because she was totally my type (but I'm trying not to be too bummed... trying to keep abundance mentality here).

How do I handle this? I try to be upfront, but I just feel like such a dick if I flirt with others.