I'm glad you liked those old love songs (and some sad songs also) from the 70s, and 80's.
Yes! "Tómame o déjame" has some serious and hard lyrics. In the song the woman is telling his husband, basically , that she already knows he is cheating on her, she says "No tienes porque inventar, si tu ropa huele a leña de otro hogar"...You don't have to make up stuff (Of why you are coming home late) because your clothes has the smell of another's house firewood (probably from a chimney).
From Jose Luis Perales, I can remember other nice songs such as "Un bolero para una despedida", and "Quisiera decir tu nombre". My dad had a lot of old records, cassettes and CDs from Jose Luis Perales, and they bring me memories of when I used to drive his pick up truck during a few weeks, because my car was not working, and I listened to a CD from Perales all day long.
My mom is a big fan of Rocio Durcal, she got very sad when Rocio died , back in 2006. Her real name was Maria de los Angeles de las Heras (My mom's name is also Maria de los Angeles). She was from Spain but her success in Mexico made her move to my country and was even known as the "Most mexican spaniard". Juan Gabriel, a very popular mexican songwriter and singer , wrote most of his songs for Rocio to sing them. Other songs from her are: "Como han pasado los años
(great song!!!) "Fue un placer conocerte", "La gata bajo la lluvia", "Fue tan poco tu cariño" and "La muerte del palomo".
Camilo Sesto was liked by both my parents, I probably know the lyrics of all his songs, because Camilo's songs were played a lot in my home when growing up. Even if I am rock and heavy metal fan , I must admit I am a big fan of Camilo Sesto. I think he has some songs with Rocio Durcal. His songs are very passionate and some are heartbreaking. My favorite songs are "Tarde o temprano", "Melina", "Vivir así, es morir de amor", "Has nacido libre", "Donde estés y con quien estés" and "Con el viento a tu favor"(I love the sound of the mandolins in the back) .