Deal breaker for you?

Me and my so are 3 hrs away from each other. Our working schedule (time and rest days) are completely diff. He works at night, while I’m a day shift. There will be a change on his sched so I asked him if he can like have same rest days as mine to make this relationship work. I can go to his place or he can go at mine’s. He really likes the night shift so that’s fine with me as long as we have same rest days so we can see each other even if it’s like once or twice a mo. Here’s the issue, I admit, i think it’s kinda jealousy but I can’t accept this thing that just happened. He likes night shift, there’s this girl, that is same shift at his and he wants her as a teammate because he said she’s nice, I’m aware of that, they’re kinda friends, okay cool with that. The thing is, this girl changed her sched from night shift to like 5am?, and hey my so said that he will choose the 5am sched and again diff off from mine, then I asked how about your teammate (the girl), he then replied, yeah that’s also will be her sched. I was like, are you kidding me? Why it’s so easy for you to adjust for a teammate and not for me as your gf? And idk, my heart is heavy and I’m now questioning my worth. Thank you for reading my rant. Please I need your genuine advise. TIA

To add : My schedule is fixed and our company operates as office hours. We’re going 6 yrs this yr. And this girl has already a family 🤷🏽‍♀️