Theres not really anything illegal about the 18 year old dating a 15 year old. However, it gets to be a legal problem if dating means having sexual relations. If you are having sex with this 18 year old guy, then he is committing a felony offense that could make him a sex offender. oral sex is out, too.

Is a 15 year old dating a 18 Okay?

Our advice to any adult, including someone who is 18, who seeks to date a fifteen-year-old is simple: do not. Wait until she is 18. “Dating” can certainly imply sexual contact, which is illegal between a fifteen-year-old and an eighteen-year-old.