I am 35 years old and female and have been the receiver of male insecurity in more relationships than I care to remember. I disagree with the idea that you try harder to supress your need to discuss your insecurities. I think that instead u should talk about things when you have questions rather than stew about them that way you know right then and your mind doesn't make up it's own scenarios in the meantime while your insecurity builds up, eventually creating the aforementioned argument. Trust me, as a woman these argments will get old and at some point become too petty in nature and she will stop them by leaving...maybe in a month...maybe a year or more but eventually. ..by talking them out when the issue arises you will become more confident in hour relationship and communication skills as well so its win-win.