Ileso literally means "unscathed" or "unharmed".
Marc Anthony sings, "Después de un amor tan grande, nadie sale ileso" (After a love so big, no one comes out unscathed), using the word metaphorically to say that intense relationships always leave a mark. It's a striking, less-common word that instantly paints an emotional picture—perfect for grabbing a learner's attention.
Marc Anthony is singing to an ex who seems to be trying very hard to prove she's moved on. She's posting pictures from a vacation, "Subiendo foto en Punta Cana" (Posting photos in Punta Cana), and going out "de party con tus amigas" (partying with your friends). But he's not convinced at all. He thinks her performance is funny, singing, "Que digas que me olvidaste, ay, me causa risa" (That you say you've forgotten me, oh, it makes me laugh). He sees her social media posts as a mask, claiming her makeup can't hide what's really in her heart.
He's incredibly confident that she still has feelings for him, and he admits he's not over her either. He says that after a love like theirs, "nadie sale ileso" (no one gets out unhurt). He's so sure she'll come back that he predicts, "Yo sé que un día de estos me llamas / Para que arreglemos en mi cama" (I know one of these days you'll call me / So we can fix things in my bed). It's a very direct and bold invitation, showing he believes their connection is still strong enough to overcome their problems.