How much do you want to bet Haruka’s feelings of unworthiness re: Michiru outweigh her survival instincts re: advice from Minako, so she always asks Minako for ideas on how to impress Michiru on her budget, and always earnestly listens to Minako’s ideas 

• First answer is always that sex is free. (Haruka just rolls her eyes)
• Cook her a lobster, buddy, rich people love lobster and the super market has them cheap (Minako actually feels bad when, a few hours later, Haruka calls her crying from the kitchen floor because it’s alive, Mina, how do people do this? They cancel the date and drive to the sea to release it)
• Do the 80′s movie thing with the boom box (this is the story of how Haruka got the police called on her by Michiru’s snooty neighbors)
• Okay, what are two things people love? Wine, and cheese. Ergo, rich people must love fondue (Michiru did actually enjoy Haruka’s attempt, to Minako’s great displeasure, but mostly because there was left over wine, however cheap it was)
• Just like, give her a massage or something (Haruka actually uses this to her advantage, and gets Minako to “show her some techniques” ie. give her a free shoulder rub. She forgets to offer one to Michiru later)
• etc, etc

And Haruka never, ever learns, because she loves them both too much