1.) Duality (duh)
2.) Semi-Duality (almost as good, but missing something... fun times together with 2nd and 8th functions though)
3.) Activation > Identical > Mirror (theoretically, but I haven't ever actually been in a romantic relationship with any of these types, or activity, though I get along with them fabulously)
4.) Illusionary, Supervisee, Contrary, Benefactor (they can be very attractive to me, but the relationships end up being troublesome)
5.) Beneficiary (same as above, but not quite as attractive to me, generally speaking)
6.) Look a like, Comparitive, Superego, Quasi Identical, Supervisor, Conflict (No romantic attraction to these types at all)