Stress signals are the ways you express stress for example: ruminating thoughts, shaking of legs, pacing.
Stressors are things that stress you, for example relationship problems or exam.
while you have to answer this question for yourself, I can give you some examples:
shaking before an exam
ruminating thoughts before meeting parents
pacing before a flight
According to the chart of phases of marital satisfaction in the text, the point in the marriage is the level of satisfaction at its peak is when the couple is retired.
Building a successful marriage is a challenge. Satisfaction appears to be a correspondence between the expected and the actual of a relationship according to Burgess and Locke.