Hi. I've Been Sleeping With My Boyfriend These Past Couple

hi. I've been sleeping with my boyfriend these past couple months, and i usually don't talk in my sleep. he says id occasionally mumble or moan, but it was very rare. now, he said two nights ago that i randomly said "im fine without you, *his name*" and it was very confusing to the both of us. he was wondering if i meant it and i dont recall doing it obviously because it was sleep talking but i dont feel that way about him at all. we dismissed it as nonsense, but then last night according to him i said "im gonna wind up leaving you if you dont stop. you're seriously irritating" i really dont understand what is going on?? i love him and i never plan on leaving him nor do i want to and he isn't an irritating person so I'm just really confused about where all this is coming from. we aren't having relationship issues either. i plan on staying with him. so i dont understand where these things are coming from. because it's not how i feel, but at the same time it doesn't seem like normal sleep talking behavior based off what I've heard about sleep talking. i want to know what is going on in my mind when I say these things or just why I even say them