You can get away with almost anything as long as it’s the middle of the night. For would your partner be able to guess what you said was real or just part of some dream? I’m not saying that one should do anything wrong but if so let it be long past when the lights go out.  A matter of fact you could probably use the excuse of  sleep talking or even sleep acting if it’s really poor behavior.  NIght excuse probably will come in handy as long as you’re sure it’s real?