I am getting married in 3 months to a wonderful man, but I am troubled
by my dreams about him. In all my dreams about us, he is cheating on
me in some way (at least 10 different dreams in total). This makes no
sense to me at all because in my waking life, I have never felt more
secure in a relationship, never felt more loved, and never trusted
someone as much as I do my future husband. I have had many
relationships in the past where I've been cheated on, but really do
not worry at all about my fiance's faithfulness. I am confused, any
ideas why I would have dreams like this? I am not cheating on him
either.

This is just my opinion (and, admittedly, I'm not the kind of person
who gives a lot of credence to dream analysis) but I often find that
when a dream is "trying to tell me something," it's not to be taken
literally.

That is, if you're having a dream that your fiance is unfaithful, it
may not be that your subconscious is literally telling you that your
fiance is unfaithful. Rather, you might have other sorts of
anxieties--maybe just as simple as wedding jitters--that are being
represented in your dreams as infidelity.

If (and this might be a big IF) you're inclined to read any "deep
hidden meaning" into your recurring dreams, I'd say take a moment to
think about what possibly could be worrying you about your fiance and
your marriage. Is there anything aside from his fidelity that worries
you about your fiance? Is there anything about married life in general
that worries you?

Honestly, getting married can be such a stressful situation that I
wouldn't be surprised if your dreaming mind concocts all sorts of
bizarre imagery in its normal process of "de-fragmenting" the brain.
But that doesn't mean that bizarre imagery is to be taken literally in
your waking life...

So nice of you to take the time to comment on my question, thank you!

tr1234-ga 
stated very nicely, I concure 100%

I should add one more comment. After you are married and have children
you will dream all sorts of terrible things happen to your children.
So your dreams will change. Those are horrible dreams, however I can
assure you that once you successful get the kids all grown up, those
dreams also go away. The older I get the less I dream. You tend to
dream more when you are younger.

Dear Christiane  (lovely name),

I also agree entirely with Tr1234, both on the pre-wedding anxiety,
which is typical, and about the content of the dreams.
Dreams use the "material" they can find; it would be logical (not the
best word!) for your completely normal doubts before the big step to
be expressed in the terms of your earlier experiences.

Maybe you are thinking:  "But I don't have any doubts!"  

You would be unusual if you didn't have any before sealing such an
important decision in your life.  As Roxrox mentions, dreams deal with
the things that are in the back of our minds that worry us, maybe
especially if we don't admit to them.

Take care, and let me wish you both all the best!
Myoarin

I thank you again for your insightful comments and agree that my
dreams are most likely my mind's way of dealing with wedding anxiety,
and the reality of committing my life to another person!