Advice

Honestly i need some advice real ass advice. I have been going back and forth with myself about my emotions due to the many shit that has happened to me in the past. I have problems with my mother from a young age with her not being there for me,poblems with a death of someone that meant the world to me, and now problems with being in a situation that cause me to feel alone and experience something i did not want to and i felt like no one understood how i felt an they would act like it was no big deal but to me it was and they were not there for me when i needed them the most i have explainded this to one of the persons but nothing changed and now its causing conflict in our relationship because i have not gotten over it and i feel as thought my real feelings towards this person cant be released until i get over what happened