Rex Features
Dolores Aveiro, 54, admitted that she is constantly bemused by tabloid speculation which surrounds her son's love life.
The Man United player has been romantically linked to an 18-year-old university student and a gym instructor in recent weeks.
However, responding to the rumours, Aveiro insisted: "My son has only introduced two girlfriends to me - Merche Romero and Nereida Gallardo.
"If I believed what other people say, he has been with more than 100 and he is a womaniser. But I know that it is not true. When he likes a girl and the relationship is serious, he presents her to his family."
Ronaldo dated Spanish model Gallardo for a brief period of time in 2008. Their partnership followed his earlier romance with Romero, a Portuguese TV star.
Aveiro made headlines in 2007 by claiming that Gemma Atkinson was telling lies about dating her son.
