Age can be tricky when dating, I’ve always followed one rule when deciding if a woman is too young for me to date. You take your age, divide that in half, then add 7.
For example, if you’re thirty, half of 30 is 15, plus 7 is 22. You can still date a 22-year-old and still be relevant. If you’re 22-years-old, half of 22 is 11, then adding 7 is 18. You can date an 18-year-old without it being weird. However, it goes without saying that if she’s under 18: stay away, no matter what.