Need help navigating my [M-26] feelings about my girlfriends’s [F-24] guy close friend.

I have been dating this girl for 7-8 months now and everything is going great except one thing.

She has a guy best friend, who she is very close with. This didn’t bother me much at all, and I didn’t want to be controlling boyfriend so i never spoke to her about him.

She works with him and they are always together at work (they have always been, even before our relationship)

For some context, we have decided to keep our relationship secret (professional reasons).

So recently he had a fight with my girlfriend because apparently she wasn’t giving him time. She was very upset for 2 days over this matter. Her explanation was that she doesn’t like that he’s hurt because of her.

This resulted in her apologising and promising that she isn’t giving his time to anyone else and she has just been busy. They ended up planing to go out sometime soon.

Now this is bothering me. For one, is it normal for friends to get pissed off for not giving them time? They meet at work all the time so it’s not that she has cut off contact with him.

Also, while I understand that she can’t say that she’s in relationship with me, is it normal for her to promise him time and plan outings just with him?

What complicates the matter is that she is completely open about this with me. I brought up that he might be secretly into her as the nature of the fight was a clear indication. She told that she doesn’t think so, and if he ever brings it up, she’ll be very clear that they are just friends.

She also called me to listen to their conversation (I didn’t ask for it, she insisted that because it will make me feel better)

I’m feeling a little bad that she seems to be more emotionally attached to him than me. They have been friends for longer than me and they have more in common.

They have been friends since before I came into picture and she was the one who started the relationship with ne.

My questions are:

Is it normal for guys who are just friends have fights with a girl over matters like this?

Is it ok for them to go out alone?

I don’t want to control who she talks with at all, i just feel that’s a jerk move. However, at the same time, this is clearly bothering me. So i need your honest opinions on what’s happening here and suggestions on how to navigate this problem.

Thanks so much. I will add more details if you think more context is needed.