Translation:This has to remain between us.
=this "must" remain between us.
For reasons unknown, Duolingo insists on "have to" instead of "must" in most cases; sorry
The combination "tener + que" means "to have to"
Does this mean "We have to keep this to ourselves." or "This will have to remain a barrier between us." Is the Spanish as ambiguous as the suggested solutions?
why is must not accepted? 'this must stay between us'