Having these conversations can be hard, but it leads to you being vulnerable. Vulnerability is the key to connection. You can explain to him that you needed time to build the trust with him before you felt you could truly be vulnerable to him. Time is always important in a relationship, and trust builds on steps and experiences. It sounds like you feel you can trust him now and want to deepen your connection. You can give him education or take him to an open meeting to help him understand more about addiction or encourage him to seek out literature. The key is you being vulnerable and honest. How the two of you work through this together is a testament to the relationship you’re building.