As a closer-to-healthy 8 now, I can tell you that I still love a good chase, but I like the enneagram-5 variety: I want loyalty and trust, in a partner, but the never-ending chase, with a 5, can come in the form of a mind that I can never quite understand; a vast array of thoughts and ideas that I can never keep up with. This is still a chase, but also provides grounds for a real relationship and lasting intimacy. Also, getting someone "into their body" who is normally not quite "in their body" gives me a thrill, especially because 5s have that 8 soul-child lust that is just DYING for a chance to come out, and once you unleash that inner animal, it's highly likely that the 5 will be wild in bed. But they're still a 5, so they'd still be secretive and less likely than some other archetypes to "sleep around." On top of that, "trust" between these two types is likely because both like to "say it how it is" and don't tend to "beat around the bush." Therefore, I vote healthy 5 as an excellent match for a healthy 8.