Thieve's Handshake

You shake hands with a willing creature who has spit in their hand after you have spit in yours. For the duration, both you and the target are under the effects of the Zone of Truth spell, have disadvantage on Charisma (Deception) checks made against the other, and have advantage on Wisdom (Insight) checks made about the other.

If the spell ends early, it ends for both you and the target, and both you and the target are aware that the spell has ended.