Relationship advice. I really don’t know what to do…?

Jessica Crain Asked: Relationship advice. I really don’t know what to do…?

Ok so I started dating this girl about a month ago (I am also a girl). And its been going really good, she's totally amazing (: But last night we were on video chat with another couple that are friends of ours and she wouldn't let me like… kiss her cheek or any of that she would try to play it off if we kissed off camera. Well then (she has a boyfriend on the side to keep her parents happy and so he doesn't get picked on at school for never having a girlfriend) and out of NOWHERE she starts talking about how he's a good kisser and what not. So then she looks at me and is like "oh but I've never kissed him I swear." Little things she did all last night just pushed me over the edge. Before she left, we talked about it and she said she was sorry, but it's still bothering me and I'm not really sure why. I don't want to be the clingy over-bearing girlfriend who doesn't let her do her own thing but I also don't want her to push me away when were with our friends and act like were not together. I don't know… If someone could please tell me what to do, that would be great.