There are two types of Pacts that you can make with other players: Marriage, and the Betrothal of either one or both of your two children in the game. The Pacts interface is found within the Character section of the game menu. Pacts are dissolved upon reincarnation, but can be re-formed once the player reaches level 4.
During game play, you can decide to have your character marry another player's character. Entering a Marriage Pact grants both players 100 Power, and players can send each other daily gifts of Ale or Bacon.
Players must be level 4 to marry. Marriage is a requirement of the Died Happy Achievement.
The proposing person must look at the other player's Character profile to send a request, initiating the A Marriage Proposal Quest.
Considering the Proposal
Refusing a proposal may result in both characters not being able to enter into the same kind of pact with another person. This is a Known Issue that can only be resolved by Reincarnation.
Breaking a Pact
There is no in-game way of breaking a Marriage Pact once it has been accepted. The following links can be used to remove a current Pact, but are unsupported by Disruptor Beam, and may result in unintended effects in your game.
BetrothalJon, and your daughter, Ella. You may only initiate a Betrothal Pact for your son; your daughter is betrothed when accepting a Pact from another player. Entering a Bethrothal Pact grants both players 100 Power, and the ability to send Favors, if those players are not already Friends.
Betrothal Pacts can be canceled up until the time that they are accepted by both parties.
Proposing a Betrothal
The proposing person look at the other player's Character profile to send a request, initiating the Arranging a Marriage quest.