If he was forty and you were ten it would be legal (but that is horrible Im not condoning that! If you two do have sex he will be done for statory rape and im sure you dont want that for boyfriend so just dont be tempted and you two will be fine :) It is not illegal to date. Here, if one of the people is 18 or older and the other is at least 4 years younger, it is illegal to have sex.
If anyone finds out, the older person could be charged with rape - not be careful :) It is not illegal to go out regularly with someone, which is what dating is, regardless of the age difference.
What is illegal is if one is a minor/below the age of consent and there is intimacy. In most of Europe the age of consent is 16 and below 18 a minor.
What the situation is in the US seems to rather depend on the laws of the State in question.
Scroll down for video Artefacts unearthed include tools for creating fires and fishing hooks and spears dating from the Ice Age.Another theory suggests people arrived on the coast, rather than a land corridor through the Rocky Mountains as many had believed.Some researchers believe that earlier settlers may have have used a Pacific coastal route to reach the present-day US.They will get into trouble with the law if they want to be involved with you as you are underage at 16.If you really wish to be dating now then you ought to date someone much closer to your own age and if there isn't anyone around, then wait until you're 18.