Hi Warren, I assume "your partner" was playing with you and got booted or left the game that you were playing. Sometimes when I or my partner has been booted the profile remains red (and cannot get back for some reason), so is nessasary to close all windows to return. Like Puholino, if I am at work or am busy with other things I just turn red, or stay invisible as I know I cannot play a multi player game.
But in essence it would be nice to see who your friends are playing with but I think there are many other issues/bugs which need to be addressed first