There will always be some rivalry between Labour and the Greens, because they are competing for the same group of voters.
But if Labour and the Greens are going to form a government after the 2014 election, they will need to learn to work together, rather than quarrel over things that don't matter.
A couple of senior Labour people have been using Twitter this weekend to attack the Greens and Russel Norman because (oh the horror!) the Greens may or may not have changed their policy on mining.
This makes Labour look like a pack of clowns, and turns many supporters off. It should stop.
A lot of people have said they voted for the Greens rather than Labour in 2011, because they thought Labour were arrogant and acted like they had an automatic right to the left vote. The behaviour by the Labour insiders on Twitter this weekend seems to only reinforce such opinions.
Too many senior Labour people can't be trusted to exercise restraint when using social media. If they can't think of anything sensible to say when using Twitter or Facebook then they should say nothing.
Maybe it's time the party adopted a social media three-strikes policy for its senior people. Three stupid, negative and harmful posts and you lose all right to tweet, blog or Facebook post.
And there should be zero tolerance for any behaviour that reeks of self-entitlement.
Supporting Labour at the moment is like being a Black Caps fan. Sometimes the team rises to the occasion and exceeds all expectations. But mostly they look like a disorganised rabble. Still I support them, though don't ask me why, or for how much longer.