Whoops I guess I should reply to this since it was technically directed at me. Then again, there's not a whole lot I can tell you that hasn't already been covered by other people. It's hard for me to give much advice considering I've only been in two relationships total and the first was a stupid high school one that I had less than zero interest in... but I'd say the only real way to overcome jealousy is with trust.How do you overcome jealousy?
I don't know if I'm just not a naturally jealous person as it hasn't been an issue at all in this relationship, or it's just purely because we trust each other so much that no jealousy issues have been able to arise. Us starting off as friends (that became best friends before dating), along with the same general attitude towards sex helped a lot, of course. That being said, we're not romantically intimate with other people (that would be cheating as far as our relationship goes), so I can't give any advice there. I'm not really sure how poly people handle that sort of thing.
Also, for what it's worth, I'm a guy.