Its not illegal to date, but you cannot legally consent to any sexual contact until you are 16.
Is dating a 14 year old when your 18 illegal?
If you are 18 and she is 14, you could be arrested and charged with serious sex crimes, even if you dont actually have sex. Even kissing a 14-year-old can be charged as a felony in California.
Can a 17 year-old girl date a 15 year-old boy?
In a Nutshell: Sex between an 18 year-old and a 15 year-old is illegal in California, meaning any touching of “private parts” of either, even with consent of both parties (and perhaps even the parents of each teenager) is illegal in California because the age of consent is 18.