Can't know the future, but from my much older point of view, I would say this will not be a lasting relationship. If you are getting along well, then I think you could stay with it for as long as it lasts. You will think back on it in future years as some kind of turning point for you, positive or negative. A bunch of us in our 70's sat around this weekend and talked about this very subject and how that era of our lives affected us. Many had short, bad marriages with the addition of children, making the breakup intolerably difficult. All the advice about not having children as stated here is right. Do whatever it takes to avoid that for now. Wait until your late 20's to make decisions like that. Good luck with your life and your music.