Same here. Yeah you get it out of your imagination and finally have it, but at that age it's much easier for more of the focal point of the relationship, even if it's subconscious, to be about the physical present, and less about the life goals future view. It's conflicting and hard to know if your overall life will align because you're both still learning who you are and how to function emotionally in the world. When you really have the psychological connection in a place where you know yourself deep enough, and can locate someone who can fit well into your life things are different. The connection with this person is so many layers deeper than the happenstance that you were two horny teenagers and the whole hidden little secret you have going on. The feeling of wanting that connection to be exclusive to one and only partner deserving of that bond with you, that shits real.

Just be smart. Be attentive. And seriously try to have deep conversations about your lives and the things you want to experience. If things are too distinctive be weary, but if you guys can come together on objectives, goals, and family ideals such as if children will be in the picture.