16 and 19 year old?

I turn 17 in two months. I live in Maryland, where the age of consent is 16. I was wondering what you think of me having sex with a 19 year old. We've already had sex four times, each time it was safe. And according to the law, it is legal. However, my friend told me he was "too old". I need to know what everyone's opinion on this is. :/