I am in desparate need of advice.  This is an AE because I am too asheamed to ask under my real SN.
FI and I are getting married in a few weeks and I love him dearly.  But I have been having an affair with my FFIL for over a year now.  I don't even know how this all happened, but it did.  Now I don't know what to do.
I have know FI for ten years and FFIL has always been someone I admired and looked up to.  Before FI and I got engaged I sensed an attraction but always ignored it.  After FI asked me to marry his the attraction grow stronger.  I love my FI and want to spend the rest of my life with him but I love FFIL too.  He is an amazing person and he cares for me deeply.  I always ask him if he wants me to leave his son for him but he never answers.  I don't want to hurt FI but I don't want to hurt FFIL either.  I want to marry FI but sometimes I feel like I could marry FFIL and be even happeir.  I just don't know what to do.
The only other person who knows about the affair is my MOH and she says I need to cancel the wedding but I don't want to.  She even threatened to step down as MOH if I didn't cancel the wedding or break up with FFIL.  I don't feel like she's being supportive of my feeling and she doens't understand how badly I need her right now in my life.  I have never been so confused.