If you plan to develop a successful relationship, you have to be ready to put in the time.  Learning to accept that person without judgment while never attempting to change them will get you off on the right track.  Once you define what you want out of the relationship, you must act in accordance with your desires. Insecurities promote jealousy and infidelity which usually crush a relationship. Learning how to communicate will take a lifetime as we slowly change with time and experience.  Talk to your partner about your feelings, insecurities and desires.  Be authentic to who you are and be as blatantly honest as possible.  This will give you the best chance at success!