Boyfriend just started talking in his sleep

About some girl he works with. He works in the plants. He said he likes her and she is his gf. Wtf? I’m hurt right now. Idk what to do. I won’t be able to sleep all night now.

I understand it’s just a dream but I guess I was thinking about how I know and have seen so many girls say they found out their SOs were cheating from sleep talking. Like they questioned them when they woke up and the guy admitted to sleeping with the person they were dreaming of. I’m just hurt. He’s never talked about a girl in his sleep before…

We have been together for 10 years and not once has he EVER talked about a girl in his sleep.

So I looked the girl up on Facebook… her profile says where she works. Same place as him. There’s another girl that works out there too and they’re best friends. I found in his search history that he was looking her up (I’m feeling insecure because they’re both really pretty girls and the girl he looked up has really big boobs haha) I’m a mom of two and breastfed them so my body doesn’t look good anymore (my confidence is extremely low) but yea I plan on asking him when he gets home. I’m not going to turn it into an argument. But if he’s flirting and disrespecting our relationship then I need to make a decision. He was talking about work (all he talks about in his sleep is work, fishing and cars) but he said something about a guy and them just literally randomly says the girls name so I laugh and ask who she is and he said “she works out here and she’s my girlfriend” I know it’s just a dream but like I said I know some people and have heard stories about finding SOs cheating by sleep talking.