Moaning in my sleep

So apparently my boyfriend heard me moan one of our friends names in my sleep; I don’t even remember doing so nor do I believe I did because,

1. I have no feelings for this friends

2. It sounds like he may just be joking around.

Apparently this happened about two nights ago but he didn’t want to mention it because it would make thinks awkward. I keep telling him that I dong have feelings for this friend and he keeps kinda shrugging me off. Idk what to do 😭