Libido
When Libido is 20 or lower, the character gains a bonus to Lust Resistance. It's harder to tease someone of normal sex drive into submission!
When over 35, the character takes a penalty to Focus but gains an inherent bonus to Tease accuracy. You get better at using your sexuality as a weapon, but the things you like turn you on just that much more intensely.
When at 70 or higher, the character begins suffering a penalty to Lust Resistance. It's so much harder to resist your lusts, and to even care who or what's propositioning you.