Conversation with others

Hello people
I am talking with a girl lately that will be my future wife. My main problem is I don't find subjects to talk about, and sometimes it takes us few good minutes to talk again.
I feel like my brain is stunned, no ideas to talk about, I find it very difficult to find new subject to open up a conversation, and not only with my girl, it happens with all people, if I am not being asked I wont talk...
Will nofap cure this problem? I think my problem is not on shyness, I guess I damaged my brain really seriously, and I am paying the price now.
Have anyone faced this before? And how did you cure it? I am afraid that she will leave cause of that. Help me please I am very worried.
Thanks.

 

Have you got over the problem? If yes what have you done to get it cured?