My bf is mad because I talked in my sleep

Last night my bf and I got into a bad argument.

We were laying in bed and I fell asleep. Apparently, he didn’t fall asleep and was awake watching YouTube videos. I was having a weird dream and woke up. Apparently I was talking in my sleep. I was saying weird things to my boyfriend and said something like “remember when I went to get the mail and we made a plan”. I was half asleep and what I said made no sense.

He started questioning me and asking me what I was talking about. Once I woke up and realized what was going on, I said “ oh I was having a bad dream and must have been talking my sleep”.

Well he accused me of making a plan with another man. I’m like are you serious. What I said didn’t even make any sense. I was half asleep!!!

I have Never cheated on my boyfriend and would never !!! He made me so mad accusing me of something just because I was talking in my sleep!!!

I slept on the couch and cried myself to sleep.

Any advice ???