I've had a lot of experience with the Venus/Mars conjunction and I also know many people who have the Venus/Mars sq. in natal as you do Aquacheeka.In order to make this work and to stop arguing - there is some kind of inner conflict you have to get past. I'm saying this, because he is directly triggering your Venus/Mars square.
One problem is that he does not conform to your Libra Mars ideals. He is not diplomatic enough, intellectual enough, reasonable enough and so on.. (from your perspective).
In many Venus conj Mars relationships.. the Venus might see Mars as a bull in a China shop.. so fights are likely.
But in your case - you also have Mars square Mars and Mars/Pluto DW which can make things even more intense - for better or worse.
You are both naturally aggressive. This is only amplified when you are together. The difference is that your aggression is in control.. and it is mostly there on a verbal level.. whereas his aggression (Mars square Pluto) - can be out of control... and sometimes physical (Earth Mars).
And since we're on the subject of *him* - he also has his own inner problems to deal with.
This can be *difficult* for both of you. There are things in your past that you both - cannot open up about or heal... and sometimes, you are reacting to each other on auto-pilot, almost as though you were arguing with *others* (possibly parents or people in authority) who hurt you in the past.
There is a lot of projection happening.
I think you do care about each other - very genuinely. And it would break your hearts to split.
But making it work is going to require BOTH of you *trying* to make it work. If he is not into astrology/psychology like you are.. and he cannot be self-analytical.. so you cannot find a way to resolve these issues... then I don't think this is going to work out.
It would be a shame because, as I said your are clearly in love. It is not an easy situation though.
You both need to 'back off'.. In most situations - you just need to take some time to chill and then try to discuss things calmly. It would also be helpful for you to get some counselling together (if he is up for this).
Because it would be good to have a middle person - who can see things from a more reasonable perspective and help you understand what is really going on.
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Cap Moon-Pisces Merc-Taurus Venus-Cap Mars conj Neptune-Pisces Jupiter.
These are my placements. If you are a friend of mine then you probably know who I am. Please don't post it on LL. If you are unsure - you can email me on the email in my profile.