Jealousy towards my actress

I was sitting on the sides waiting for my girlfriend Naya to finish working.
I don’t know why I came because I always get jealous and we always get into an argument.
The director called break and and Naya came over to me for her water.
“Good job babe.
You’re doing great.” I said looking up at her.
“Thanks baby.” She took a drink of her water and handed it back to me.
“Do you know how much longer you’ll be?” I said checking the time.
“Um around 5 pm.” She said putting he hands on her hips.
“Oh maybe I’ll come back later and pick you up.” “Okay don’t make dinner without me!” She smiled cutely.
I giggled and kissed her cheek.

I came back to pick up Naya and I saw her kissing someone.
I felt a pang of jealousy in my chest and I rolled my eyes.
It’s just acting.
It doesn’t mean anything even though she’s one of the hottest girls here.
When I looked back up she was still kissing the guy and he had moved his hand down lower on her body and she placed her arms around his neck.
The director yelled cut and they pulled away.
She smiled up at him and pushed a piece of hair behind her ear.
They talked for a few minutes before she finally came over to me.
“Hey baby! I missed you.” I forced a smile at her.