Is it ok and common that female friends don't want to meet their male friends alone once they get a boyfriend?

[more_than_a_guy]

My friend and I are not conservatives, but apparently she thinks now it's wrong. When she was single, we met alone couple of times, but we see each other mostly in the university anyway.

[Tschil200]

That’s just rude and shows a lack of respect to you and also lack of trust in her own relationship