Me vale literally means “I dont care”. To make the expression stronger, we add certain words, like, madre (mother), verga, un pepino (a cucumber), and many others, but the main meaning remains the same.
Tu ex novia ya trae un nuevo novio. Me vale madre.
Your ex girlfriend already has a new boyfriend. I don’t care.
I hope you have learned something new, about the spanish that real Mexicans talk on their everyday life.
If you want to improve your Spanish, I also give tutoring lessons on skype using this page that host many teachers from all over the world, and while I don’t really do grammar, I can help with conversation and doubts about the language. Also, if you are interested in any language besides spanish, there are teachers and tutors for any language there.