please discuss how it is translated as "he loves her" than He loves, for further clarification.
This "a" means ela. Here you'll find all about that: http://en.m.wikipedia.org/wiki/Portuguese_personal_pronouns.---- http://www.sonia-portuguese.com/text/pronouns.htm much information but i hope that helps. That explains clearly :)
Thank you, Paul Enrique. It was confusing for me in the beginning, now i understand.