That's like a haram relationship. For a Muslim it's like that when they're not married. But when a Muslim is married, public acts such as kissing, hugging or otherwise being on an intimate manner in public, is frowned upon.
Kissing ones wifes hand in front of other people in the street - Islam Question & Answer
On the other hand, marriage must be publicised in the sense that it cannot be a secret.
I don't know why you want me to imagine that. I can, but nothing is more important to me than obeying Allah, so I won't be, if Allah wills, brought to give up on obeying Allah due to a longing for another human being in the way you seem to suggest.