If you are saying it to someone who is actually a baby, then you would say "Ah, pobre bébe.
If you are saying it to someone older (like affectionately to a loved one), you would say "Ah, pobrecito", which literally means "Poor little thing".
Mi pobre bebé. Pobrecito.
pobre
Te amo, nene / nenaTe Amo Baby --- This is not Spanish!
From English to Spanish His baby is: su bebé.
pobre perro
Pobre marido.
you say: venir beb'e.
You can say "Cuándo era bebé."
Bambi.
Su español es muy malo.
bebe estas ahi
Aww bebe