You can date anyone you like, even your sibling, and it would not be illegal. However, if "dating" is a code word for "having sex with" - it depends on your individual state. In many states, it is not illegal, but in others it may be. You had better research your state's laws to make sure.
No dating your 3rd cousin is perfectly legal!
You can date anyone you want, whether third cousin or first cousin. Going beyond simply dating may raise issues with a first cousin, but not with a third cousin.
Theirs notting wrong dating your cousin because back then sisters and brothers would date or even marry
There are no laws against dating. However, if you want to have sex or get married, she has to be your third cousin.
If you're a redneck. Then sure. ---- Ignore the above post. There's nothing wrong with dating your third cousin. Your closest common ancestors are your great-great grandparents. What's wrong with this situation is that 1) she's a child and 2) you're 4 years older than her. Wait til you're 22 and she's 18.
It's highly possible, and within the law. The closest relative you can date is the third cousin, I believe
Your grandmother's third cousin is your third cousin, twice removed.
Your husband's third cousin is just considered your third cousin through marriage.
Though I may be wrong, im sure a 2nd cousin would be a "cousin in law" of your cousin. No blood relation at all, therefore if he or she is cute, go for it, but ask your cousin to be polite. Or dont, I personally dont care.
The son of your mother's third cousin is your fourth cousin.
Dating isn't going to have any effects. And why would what your cousin is doing have any affect on you? It is more coincidence than anything else.
Third cousin twice removed.
First cousins' grandchildren are third cousins to each other.