Thanks for your reply! I will definitely give it more thought about where my feelings are coming from. I can tell you that some certainly stem from insecurity - it's not that I don't trust my boyfriend, but more than I guess I don't believe in myself. I have a tendency to believe other girls are better, and that sort of belief will undoubtedly fuel my discomfort when other girls are more flirty. I was also cheated on in a previous relationship, which as you can imagine, hasn't helped!

He's mentioned himself that he's not all that comfortable with it either, and has acknowledged that it is flirty and isn't how anyone else treats him. I think for me, I would say a big part of me in angry at being 'disrespected' - like to me, respecting social boundaries and being careful around other significant others plays a large part in my interactions to make sure I'm not stepping on other people's toes, and I try my best to be friendly to her, so I get a bit offended when she doesn't do the same for me.

Do you think it's enough for us to just continue on this trend, where my boyfriend reassures me and stands closer to me while not responding to the more flirty gestures, while I for my part remind myself to not see any of her actions as a threat? It is about changing my mindset too, I think. And I'll need to brainstorm more as to how to do that. It's easier to say 'Oh, I'll change how I view that' versus actually doing it, so I'll definitely take some time aside to give it some thought. And, as my boyfriend mentioned (which was quite sweet!), I need to give myself and him some credit. He does like me for a reason, and has never liked these other girls for his own very good reasons! I need to trust in that.

That was a bit of a ramble (sorry!) but in essence, thank you for your reply, it's been great to hear advice and get a clearer picture of how I should be going about things!