I [17F] recently started to date a new guy[19M], he’s the complete opposite of me, he’s very quiet and too himself but still very loving and affectionate. This is his first real relationship, virgin and all considering I was his first kiss. I was diagnosed with depression and anxiety at 12 but with BPD at 15. The two relationships I’ve been in since my original diagnosis at age 12 where catastrophic and I ended up using sex as a coping mechanism which a lot of people don’t find healthy at my age including my first doctor. He knows I’m not a virgin and isn’t concerned about that part but I’m scared to tell him about my diagnosis and his reaction. He tells me he will be with me through thick and thin and I want to believe him but I still have that perpetual doubt and I don’t want to end up hurting him as I have a history of cheating when that fear hits me. What’s the best way to approach this? 