Here are two of my favourites, perfect in their simplicity.
Stetit puella
Stetit puella rufa tunica;
si quis eam tetigit tunica crepuit.
Eia!
Stetit puella, tamquam rosula;
facie splenduit, os eius floruit.
Eia!
A girl stood in a red dress;
if anyone touched her, the tunic rustled.
Ahhh!
A girl stood, like a rose;
Her face shone, her mouth bloomed.
Ahhh!
Dulcissime
Dulcissime,
totam tibi subdo me!
Oh my sweetest,
I give myself completely to you.