Inviting friends who have fallen out to my birthday bash?

[concertplayer]

I have known the first for years and she introduced me to the second
one a few years later.
They have both been good friends to me and have held lots of dos
as well.
I was advised by another mutual friend that they had now fallen out.
The mutual friend will not mention my bash Discreet

I'd invite them both and expect them to behave like adults.

It may depend on the reason for the fall out though.

Will they behave themselves? And do you want them there?

I had a similar problem for my wedding. Two friends who had fallen out over a man

I invited them both, sat them at different tables and was assured by another friend that they were both grown up enough to behave themselves. They did. No fuss, no drama, they may even have been briefly civil to each other.

If they can't be guaranteed to act like adults. Don't invite them.

I would invite. They should be big enough to either avoid one another or decline the invitation.

Unless the fight is something to do with you, it shouldn't affect who you invite to your party.

Enjoy the party when it comes