Dionysus's Links
Freyja was one of the first people to join Dionysus' entourage. They dated briefly and decided they're extremely incompatible. As friends and coworkers they get along. Not well, but they get along.
Their relationship is complicated. They can bicker quite often, but they can also get a lot of shit done together. Freyja still harbors residual intimate feelings for him, but doesn't want to get involved in that mess that he calls his romantic life again.
Dio met the nudibranch on Terra Zenso, and not long afterwards they joined his posse. It's not difficult to see that Dio is rather fascinated by Ylmyar on a number of levels, and has a slight fixation on him at the moment.
Ylmyar was the second person to join Dio's crew. They're sometimes put off by Dio's sexual forwardness, but his good natured sprit always keeps Ylm rather comfortable and eager to talk to him and hang out.