Hi there, I'm pretty new too but maybe I can give you some useful advice
With the feeling weird part I don't know really how to help you... just realize they are just human too, nothing to be scared about. Make extensive use of the 3 sec rule and just don't think too much about it, maybe the best way around it.
For the approaching, try something girl relevant like: "hey guys, listen. Is it actually cheating if your girlfriend kisses another girl?" must be said really self confident, and BE SURE to have everyone's attention in the set before you deliver the opener.
Keep the conversation gion' with some routines or tell some interesting stories, talk about her interest, or just whatever comes in your mind, just keep it positive and interesting. Last thing you wanna have is girl thinking about sad things.
Hope this is useful advice
