Should my girlfriend keep in contact with male friends that have fallen in love with her?

I am in a committed relationship with an amazing girl.

That said, she has some close male friends that she made before we met. Two have confessed love for her, and she doesn’t love them back. But she still wants to have a close friendship with them.

I feel like she should start systematically lessening her communication with them. I’m not saying that she has to stop being friends with them, just ‘close’ friends.

Am I wrong to be bothered by this? I have no actual fear of her up and leaving me, but its a frightening possibility that one of the two could try to sabotage what we have.

And if this info helps, we are in a long distance relationship (not for long, though), and the two friends don’t know of each other.