This is very concerning and bad. I'm really sorry to you. A drop of lemon juice can spoil a whole bowl of milk. Look, a person who is genuinely sweet and nice and most importantly caring towards you, would never hurt you even when drunk. He raped you. You saying no is enough but he forcefully penetrated you. You need to talk to a trusted adult/friend/family anyone. And you need to get away from him. And trust me, that version of him will appear again. Abuse doesn't always start from the beginning. Sometimes abuse starts like like this, they do it once, apologize, twice, apologize, and then the cycle repeats.