Sentence:  My dad was married to the love of his life – finally – it took him three marriages to get there, but when they landed together, they were so busy having fun and dealing with their own <WSD>"Sturm und Drang</WSD>" that I could've been a tenant who lived downstairs. 
Meaning of the word marked with <WSD> tags:  Turmoil; a period of emotional intensity and anxiety.