How does Waythorn portray himself in terms of his temperament and personality in Edith Wharton's short story "The Other Two"?

In Edith Wharton's short story "The Other Two," the protagonist Waythorn describes himself as having a rather stormy temperament, which means he is easily upset. Early in the story, he also refers to his sensibilities as "unstable" and later, after he begins feeling upset by the presence of Alice's ex-husbands, calls his sensibilities "womanly." The word sensibilities refers to the ways in which our emotions respond to the things that go on around us; people with heightened sensibilities feel hurt very easily (Random House Dictionary). We particularly learn about Waythorn's stormy temperament and heightened sensibilities when he compares himself to his new bride, saying that her calmness and happy disposition were such a stark contrast to his own emotions that he found her attitude attractive:

His own life had been a gray one, from temperament rather than circumstance, and he had been drawn to [Alice] by the unperturbed gayety which kept her fresh and elastic.

Waythorn is also a very trusting and self-sacrificial man. We see his trusting nature when he agrees to let Alice's first husband, Haskett, visit their ill daughter at Waythorn's home. We see his self-sacrificial nature when he agrees to assist her second ex-husband, Varick, with a business matter. The problem is, the more he exposes himself to her ex-husbands, the more he sees that they aren't at all the men she had described them to be, which makes him begin to question her trustworthiness. The more he has these worries, the more he regrets having what he calls the "womanish sensibility which made him suffer so acutely from the grotesque chances of life."