I like the sound of Aiko, check out the FAQ on the link above:
Companionship: Yes, it is possible to have Aiko as a companion. Aiko has sensitive sensors on her faces, body, including her breasts and vagina. Aiko will know the difference when being touch gently or being tickled. The BRAINS software and Aiko can be re-designed to simulate her having an orgasm. The software can be re-designed to "play hard to get" or "straight to the point". Well, you get the point... no need to go further into details.