Mars in Gemini has an energy that rises and falls with how interested they are in what they are doing, and they tend to defuse arguments with humor. They can move from one task to another with skill, although they may find it hard to keep up their commitment once the fun is over.
Activities shared with friends keep up their enthusiasm. They prefer a setting where they can talk and laugh, with variety and without overly rigid rules or routines.
Within their group they tend to be tolerant. If an argument starts to heat up, they may turn to a joke to ease the atmosphere. The expression “Better a good friend than a bad argument” sums up that preference for keeping things close.
That disposition may change with people they don’t feel are part of their circle. Outside that space of trust they may be less patient, gruffer or more irritable: the tolerance they offer their friends doesn’t always extend to others.