All over (someone) like a cheap suit phrase
Used to describe a situation in which people gather together in large numbers or filling a particular place
When the famous singer walked out of the building, the press were all over her like a cheap suit.
I guess she has a crush on him because when she sees him, she will be all over him like a cheap suit.
To cover someone or something with soap
To keep optimistic or have hope that something positive will occur and simultaneously prepare for a negative outcome
All I can do is hoping for the best and preparing for the worst.