Grimms' Fairy Tales
How we cite our quotes:
The bridegroom was astonished and thought, She looks just like my Maid Maleen; I'd swear it was really her, but I'm sure she's a prisoner in the tower, or she's dead. (Maiden Maleen.575)
Lovers, longtime friends, and even parents and children don't always recognize each other in fairy tales because of the transformations (both magical ones and natural ones like aging) that occur. It makes for some really awkward encounters.
The fox went with him to a spring, dunked itself in the water, and came out as a market vendor who sold animals. The young man had to dunk himself into the water as well and was transformed into a little hamster. (The Little Hamster From the Water.551)
Some transformations get you more bang for your buck. And, in this tale, the transformations are life-saving (the guy survives courting the princess) as well as spouse-obtaining. Bonus.
"My father's after us, and he'll soon catch up. Wait, I'll turn you into a rosebush and myself into a rose, and I'll protect myself by hiding in the middle of the bush." (The Two Kings' Children.378)
Giving your lover roses is so last century. Turning them into roses, on the other hand….