Confused

I’ve started dating a new guy who I’ve known for 3 years now. Well the first time we had sex, I came 3 TIMES. I can never get off during sex no matter what so this was huge for me. He is also huge also 😂😉🍆. But every time since then , I can’t have an orgasm af all. Even with toys. I don’t know what’s wrong or why I can’t. It makes no sense and is frustrating. How do I fix that ? Same positions and everything.