I was told: 

> 
> Glad to come across someone who knows Theology.
> 
> 
> 

My (proposed) response:

> 
> It's my pleasure to find someone else interested in Theology on the other side of the World. 
> 
> 
> 

I am unsure whether to use *interested in* or *interested by*. Google Translate gives me the impression that I may be wrong.