Translation of einsteigen

I need to write you one more sentence. This is what my teacher told me and the German language is so difficult. So please, as a last favor, would you please write the sentence for me in German?
I told her that when you meet a person and you like that person you start dating him/her. After a while, if the couple stays together they go to the next step and move together or get married.
As soon as I went to bed, incredibly loud music starting playing from right beneath my room. The music was so loud that I could not fall asleep despite my jet lag and despite being extremely tired.