How to Know When It's the Right Age to Have a Boyfriend. You may be asking yourself if you're old enough to have a boyfriend or begin dating. There isn't one. You should start dating when you want to be in a relationship and you're mature enough to deal with conflicting desires. A relationship only has to be based on. If not, or if it would cause you to get distracted from what God wants you to do, then this is probably not a good time for you to start dating. If a boyfriend or.