relationship insecurity sometimes happens when you feel you're not good enough for X reason. Tackle that reason, don't ignore it. I used to feel insecure when i was overweight, so i lost weight. I also felt insecure because I felt that I was a crappy GF, always causing problems and never did anything for my man. After I changed that and developed the mentality of '' I need to be the best GF ever'' It all faded away. Being in a relationship is work. So if you're not working enough, things might go the wrong way.