Dealing with Jealousy in a Relationship

I don't think you should stop posting your friends 😕 That sounds just as unhealthy as your girlfriend's behavior does. Your girlfriend's jealousy and insecurities are her own issues. Yes, of course you want to help her overcome them - but stopping any association with your friends, posting about them included, is definitely not the way to go. If you haven't already (and maybe just one more time if you have), you should talk with her. Explain to her that A.) "I love you and I am not interested in engaging romantically with my friends. They are my friends, nothing more." And, B.) "Your jealousy and insecurity regarding my friends is having a huge negative effect on me. I understand your worries and I want to help you overcome them. However, having friends is healthy, just as posting about them and talking about them are. Your jealousy and insecurities - while well-intentioned to protect you from percieved harm - are misplaced and unhealthy." And then, if I were in your shoes, I would provide a sort of ultimatum. "I'm keeping my friends, I'm going to keep posting about them or talking about them whenever I would like, because that's what friends do. I'm going to keep loving you and only you, because that's what I do as your partner. I can assist in fighting your insecurities and jealousy in any healthy way I can, if you'd like me to - But I will not sacrifice the healthy parts of my life for the unhealthy parts of yours." Basically stating "That's unhealthy, I'm not sacrificing my friends because that would only hurt me and not help you [your jealousy/insecurities]. I'm here to help, but expecting that of me is ridiculous unhealthy." There are no healthy circumstances where removing your non-romantically involved friends is a good choice (even if it's just from your story/mentions) I'm sorry this has been weighing on you, I hope you two can work through this soon - but neither of you should have to sacrifice your friends and communications between them for a relationship to be "peaceful"

I think you should stop posting stuff on Instagram.It will only make it worse if you don't.

Yes you yelled at her and it’s understandable to be upset about it but the fact that you feel bad shows how much you care. Everything you’ve said in here should be mentioned to her if not already. I think it really is more of a matter of actions than words though. Probably refraining from posting your friends is a good idea if it truly is affecting you guys. You’re amazing for caring about her feelings though.