To be fair, CalamityKate, I have often wondered what real love actually means.
How I could look across a muddy field in a foreign country and see dh and know he was The One (and still know he is The One 31 years later). I've never understood it.
Whilst other people can work in the same workplace for years and then when they get married find they can't stand each other.
Or be married for years and then realise the other person has had a whole double life that they knew nothing about.
What is knowing another person? Do we ever know another person?
These are deep waters and I'd rather not go there, especially not with a teenager.
I think I'd concentrate on the practicalities: if he leaves Turkey to be with you before he has done his NS then he can never go back to his own country, never be with his parents- what would that be like for him? If you go there to marry him and he then starts on his NS, you will be stuck with his family who won't understand a word you say and may find you a bit of a nuisance- what will that be like for you? Will his barman's wages be enough for the two of you- and maybe a child - to live on and if not, what can you contribute to your income?
All in a calm undramatic manner. And all the while profoundly grateful that my mother never had to do this for me, as I was perfectly capable of doing it for myself.