What an interesting situation and dream, TealOrca, thanks for sharing it.

I didn't really see anything romantic in the dream; I think the kiss was just to "identify" or point to one or the other of two interchangeable guys?

You have a current situation that is in two, also. You are "here" and your boyfriend is "there". In the dream, the friend (who is also kind of like the pivot point?) is "here" and your ex-felt-for guy was "there" behind a closed door with your purse.

A purse in dreams can symbolically mean female sexuality http://www.dreamsleep.net/purse-dream-meaning.html and here you are now, away from your current boyfriend and you have given that part of you to him so can't get it now?

Of course, that you are currently talking with the friend again whom you kissed in the dream. . . a kiss has its own symbolic meanings too: http://www.realmeaningofdreams.com/kiss-in-dreams.html

Your sexuality being locked away with your boyfriend and yet kissing the friend friend; lots of interesting things to think about