The baseball player had earlier introduced his girlfriend to his sister. Things seem to be gettingserious between the two! The baseball player had earlier introduced his girlfriend to his Din976 sister.TMZ.According to sources, A-Rod hit it off really well with Lopez’s mother. Jennifer Lopez has just made a huge move with her new boyfriend A-Rod.com reports that the couple were spotted holding hands and walking in New York City with JLo’s mother. The Monster-in-Law actress introduced him to her mother