GOING TO THE NEXT LEVEL WITH YOUR BABY

So me and my boyfriend are freshman in college. We both have the same goals and aspirations. He's my bestfriend and I can honestly say that waking up next to him is something I can't wait for. Am I too young though..? We want to get promised to one another, which in my religion it is kinda a big deal cause you're promising to God that you'll be together. It's more of an engagement. But not too much. It's confusing but we want to do it. Do you think we're too young? Both our parents know just how serious we are about one another. We're not getting married until we both have degrees though and I'm graduating a year early so I mean it's not that far away. But most people will say we're too young.. What's your opinions about my age and current situations?