The attraction between you runs hot and strong, or at least it did in the beginning. It may be mutual, but it could be somewhat one-sided, with your partner running hot while you tend to run cooler. This kind of mismatch in your energies creates friction between you -- and friction can be very provocative!
Your passions are aroused easily when you're together, but it isn't just your sensual passions being kicked into high gear. Your lover also irritates you, and a different kind of tension may mar your connection. In fact, you're likely to find them to be rather offensive -- noisy or crass in public, or just tactless whether it's in front of other people or behind closed doors. There might be cultural differences between you, or differences in the way you were each brought up, that will cause problems as well. You're more social than your lover, and your urge to go out all the time might make them jealous. In some way, you inspire a big reaction in each other -- and it isn't always pretty. A smooth, trouble-free relationship just isn't possible with this aspect firing things up between you. At least the making up after an argument is fun for both of you ... But the pattern of fighting, then kissing and making up may be wearing you both out if other aspects between you aren't intervening to cool down all that heat and energy.