The bond between is difficult to maintain because this aspect lends your relationship a fractious, irritating energy that brings both of you down. The sexual attraction might be really strong from the start, which could be the factor that convinces you that pursuing a long-term relationship is worthwhile, when really, you might be better off apart. Sex and sensuality can be strong motivating factors; when it's good, it's amazing, and you don't want to give it up!
However, it's not enough to base an entire relationship upon. In fact, you might actually feed your sexual connection with other sources of friction in your relationship. Conflict is second nature between you; you don't watch your mouth or your behavior when you're together, and you end up saying things that you'd never say to someone else -- hurtful or tactless things that end up getting under your lover's skin in a big way. Irritation grows, resentments store up, as do arguments...but there is that strong attraction that you rely on as one way that you both know you can relate with each other in a positive manner. Instead of perpetuating this pattern, why not try to change it? If you do form a long-term relationship together, you can work together -- with conscious effort, of course -- to find the source of your irritating influence on each other, and find ways to relate more gently and kindly.