The Flash Marriage Took Off Slowly, but My Husband Dotes on Me Like Crazy

(Marriage first, love later + sweet story + flash marriage) Good news: I married into the most wealthy family. Bad news: I got married for my sister who ran away. Good news: My husband is rich and handsome. Bad news: He's not interested in me, and I'm not interested in him either. Me: "Prenuptial agreement, my scientific research income belongs to me." Him: "Okay." Me: "I want an independent laboratory." Him: "Okay." Me: "I need 50 million investment." Him: "Okay." (This husband... Seems to be quite useful?)