If you can't confide in your boyfriend about your depression, and truly have him support you, then quite honestly you need to kindly say goodbye. If this man is ever to become your husband, or long-term cohabitating boyfriend, you NEED that support from the key person in your life. Sure, it's great to talk to friends and relatives and strangers on the internet and your therapist, but if you can't talk to the person who is the center of your world...it won't work.