The idiom "a friend in need is a friend indeed" means that people are more likely to be loyal and helpful when they are faced with difficulties or emergencies. It implies that friends will step up and provide support when needed.

The idiom "spare someone's blushes" means to protect someone from embarrassment or shame, especially by preventing them from being exposed to an unpleasant situation or information. It is a polite way of saying that you want to save someone from feeling uncomfortable or awkward.

The idiom "lighten up" means to become happier, more relaxed, or less serious. It can also mean to stop being upset or angry.

The idiom "playing second fiddle" means to be relegated to a supporting role or position of inferiority, often behind someone else who is more important or successful.

The idiom "cross paths" means to meet someone or something by chance while going about one's daily activities or travels. It can also refer to the coincidental encounter of two individuals who share a common interest or connection.