15 year old son wants to move out

[user1487546656]

My son is 15, in year 11, and about to start his GCSEs. He has decided he wants to move out of our house once he's finished his GCSEs (he will be 16 by that point) and in with his boyfriend.
His boyfriend is 19 and went to the same school as my son. He lives in our town so my son wouldn't be very far away but I don't want him to move out so early, especially as he's still going to go to sixth form.
He seems to think he and his boyfriend will be able to support themselves on his boyfriend's money from an apprenticeship he's doing and my son's money from part-time jobs he wants.
Obviously, legally, he can move out at 16 but I don't know how to convince him out of it or should I not? Thank you

I think a lot of people are not making a big deal about the ages of 15 and 19 due to being in a similar relationships at that age themselves perhaps?

If you are more mature than your peers they just aren't appealing, in which case dating someone a little older seems the logical thing to do. The OP didn't mention concerns about the age but rather how best to go about dealing with her son's desire to move out when she knows legally she can't stop him and outright opposing the idea will likely make him all the more determined.

Relationships at this age usually fizzle out but not always so it's better for OP to be prepared in case it doesn't.

Let them get on with it and be available to pick up the pieces.
In some ways a much easier situation that if he were a daughter, as at least he can't get pregnant.
So long as you're there as his safety net, there's a limit to how much can realistically go wrong