Mars is all about what moves you -- your passions, your drives, your desires and motivations. No Mars aspects between two people looking for love is kind of a big deal, because it's such a basic connection point. How will you form a romantic attraction if you don't get turned on by the same things?
Where one of you wants a quiet, intimate evening at home, the other wants a heady night out painting the town red, which means you'll find it really hard to have a good time together. The truth is, there will have to other strong connections to make this relationship work! If you can separate romance from passion, maybe you can work out a romantic connection that satisfies both of you; but that's a big if. You may both be better off finding someone who sparks you up more than this relationship is likely to do.