Thanks for your advice!
I do agree with you when you say that contact with a girl can be a distraction for an Elder. I tried to resolve this by attempting - multiple times - to reduce the frequency of emails I send e.g. rather than sending one email a week, I tried to skip a week and send it fortnightly. However, when I attempted this, each time he would email asking why I haven't emailed him for the week. I was thinking of just being straightforward and sending him an email telling him that I'm going to dial the emails down so that he can focus more on his call.