Just remember to use care not to gift.....in kind....securities in which you have unrealized losses. The donee then has to use the lesser of your cost or the FMV on the date of the gift. A loss means your cost was higher than the FMV on the date of the gift so your fiancée would have to use the FMV as the basis, meaning your fiancée would never be able to take advantage of that previously unrealized loss.
Example: Your cost was $1000 and the FMV on the date of the gift is $800. Your fiancée takes $800 as the basis so that $200 loss is gone forever.
