This isn't true for all Filipino families, but there are those that would consider you a player just for having relationships with two different women from the same "family". To some people, it doesn't matter that you broke up with woman#1 before going out with woman#2. You still look like you're picking two fruits from the same tree.
Try to find out more about your new girl's family and if the issue will hurt her too (you don't want her family mad at you), or if it's just something your ex is doing to mess with your new relationship.