Trust is what make relationship works and we build strong trust through intimacy.
I'm reading a book
The Seven Levels of Intimacy by Matthew Kelly.
I'm halfway into the book , I read about the first 3 levels.
Level 1 - Cliché (ideal to start a conversation, the biggest cliché 'Hi, How are you ?' --- 'I'm fine'
Level 2 - Facts (ideal to start building a conversation , you can talk about the things about you or impersonal facts such as the cause of Tsunami
Level 3 - Opinions (expressing opionions)
I'm currently reading that one chapter about Level 3 - expressing opionions, so far a nice book with useful information.

The other levels are :
4 - Dreams and Hopes
5- Feelings
6 - Faults, failures and fears
7 - Legitimate needs