Dishonesty
One of the toughest things to consider how to deal with your partner is how much needs to be shared. Keeping things in is like not stretching after a workout. The lactic acid is burning through your muscles, and people can see it. People know that it's painful. They can see the limp. They don't believe "No, it's fine. Everything's fine." Yet you continue, and it pushes people away. Dishonesty pushes people away.