A little secret… When men say this, it does not mean they put their friendships before a perspective date. Because I guarantee that 98% of guys will hit up their bros girl the moment they think there is a chance to hit it. This includes gfs, exs, sisiers, hell even moms.
What this really means is that they are challenging a bros loyalty to the pack and insinuating he may be whipped. Basically it’s a dare to the ego. There is no deeper meaning of friendship behind this.