I think it does, even if the physical circumstances are different.As to emotional intimacy, we live in the age of email, free long distance and unlimited any-time minutes, and cheap flights.
They see each other every day, are with each other’s families every holiday (and often know their partner’s family as well as any son or daughter-in-law does), they travel together, spend most of their non-working (or studying) time together, they daily confide in one another (and maybe one another), and are without doubt, closer emotionally with one another than with anyone else on the planet.
This is exactly the level of intimacy that is reserved for marriage only and that dating couples should make every effort to restrain until the appropriate time.
It’s still really easy to “act married” emotionally, even in a long-distance relationship.
As to physical intimacy, many long-distance couples have told me that because they are not physically close to one another as often, they actually experience Um, no. Be deliberate about avoiding “marital” levels of intimacy.
I don’t know whether you’ve noticed this, but people involved in a dating relationship tend to get to know each other better over the course of that relationship.