I think I love you - Stephanie Bond

This was a really weird storyline with three sisters Justine, Regina and Mica whose parents are bohemian( i.e. they live together and don't get married). There was a murder that the three girls were a witness to and didn't tell the police that time. Around 10 years later or so, the case is re-opened and the police are trying to resolve the case. In between of all this, there is another murder :) the girls fall in love too ;) hehhee read the story and find out what happens in the end