Argentine Tango is an intimate dance. We dance in the arms of a person we may not know well, or even at all. When we step out onto the dance floor, we are implicitly agreeing to this intimate physical contact - cheek to cheek, breast to breast. And trust is a necessary component of this agreement.
Tango is essentially an impersonal intimacy. While there are no physical boundaries, there are firm boundaries of expectation. Tango
promises nothing, beyond the bliss of translating the music into a shared experience.
Tango is not a seduction. If you use your Tanda for that purpose it is a betrayal of trust. The embrace is for dancing, not for flirtation. If you use the embrace to stroke your partner's back or tickle his neck, or deliberately rub her breasts, you are breaking trust. And once that trust is broken, Tango is no longer a shared intimacy. It has become a trespass.
Does this mean you can never flirt with a Tango partner? Of course not. Flirtation can add a wonderful intensity to Tango. But do not initiate a flirtation on the dance floor. It is not fair. Wait until the tanda is over, and your partner can accept or refuse without pressure. Once you have established a MUTUAL flirtation, you can, if both parties wish, continue it on the dance floor.