DayDreamer – The key left inside is interesting. And that you needed someone other than your partner to open it up for you. The key can link with sexuality as in the following example.
I went to an office in Tottenham Court Road. Then I woke up in bed in the office. A woman was in bed on my left. I was about to get up, and she said for me to touch her breast before I got out of bed. I did so and drew near to her, but thought it would all end in sexual intercourse, and I didn’t want this to happen. Next thing, I was in Woburn Walk, trying to unlock the front door, but I did not have the right key. In fact the keys were for a different house entirely. I was in a dazed condition and someone else opened the door for me.
He had the keys for a different house entirely. Maybe it is a hint?
If you have shut the doors for someone to get into you it might be worth exploring a way through. Try using
http://dreamhawk.com/dream-encyclopedia/secrets-power-dreaming/ I think it is not a premonition so much a mirror of you inner life situation and where you are taking it unconsciously.
Imagination is a wonderful tool.
Tony