Your heart is right there in the open. I'm an old married guy and happy with it and I think your poetry's right on track, looking for a voice and a way of speaking. You might consider that while you want to marry and settle down, a lot of the girls your age are more interested in looking around and seeing what the world's about. They may be looking for company while they're scouting things out and seeing what's what, but the idea of getting married or settling down as a teen might be a little bit to fast for them.
Why not see what happens if you just look for women who you like to spend time with and like to do the same sort of things you do. Spend time with them, both of you enjoy what happens and see what develops in a much slower fashion, so nobody gets panicked. It takes a while before people really get to know each other. Not always, but a lot of the time. Try that out and see what happens as an experiment. If it doesn't work, trash it and try something else.