According to a recent relationship poll from Match.com, the most common thing couples fight over is each other's FAMILY.  Apparently it accounts for about 45% of all fights.--And another poll showed that 58% of people think fighting is INEVITABLE.  So the key is to have PRODUCTIVE arguments. Here are their top five things that they say ARE worth fighting over.

#1.)  Spending Habits.  If you're really careful with money but the other person's not, it's worth bringing up, because it's something that will directly affect you once you have a joint bank account. 

#2.)  How Healthy Each of Your Lifestyles Are.  Meaning, if you're playing tennis five days a week and they smoke two packs a day, that might be a problem.  And it's important to talk about it early, because it might eventually be a deal breaker.  

#3.)  The Other Person's Bad Temper.  Especially if you're starting to worry about your own safety, physically OR emotionally.  A short fuse doesn't usually show up in the first few months you're dating.  But if it eventually does, it's worth talking about. 

#4.)  Bathroom Habits.  Like going with the door open, or how messy the other person leaves the sink.  The reason this fight IS worth having is because you'll almost definitely be able to resolve it. 

#5.)  Being a Team.  If it's starting to feel like you're NOT, then you should bring it up.  Usually it's because one person feels like they've been offering a lot of support, but they haven't been getting it in return.  Or, they don't feel appreciated.--And it's a fight worth having, because if a relationship doesn't have some kind of team dynamic to it, it probably won't last.