Hi!
You posted on MY thread for relationship advice!

So here is my advice to you!
I am also 19, and my boyfriend is also younger than me! (He’s about six and a half months younger.) When he visited, he gave me a ring (it has those Jesus fish on it, you know?) and declared that we are “engaged to be engaged!” So I guess I’m talking from a very similar standpoint as yours, except for the fact that he is in a different country and not currently in school.
Sen and I discussed this issue at length. We feel very strongly that we’re called to marriage and we are completely in love. It is God who has brought us close together and, though we are nowhere near perfect, we are trying our best to have and plan for a God-centred relationship and family. We’ve shared our views on marriage and children and everything like that.
We also discussed timing. Because he’s not a citizen of the U.S., it’s a more difficult issue. But, we decided that we will wait to be married until I’m out of school. My education is incredibly important to me and my family, and I have received great scholarships at the school I’m at, so even transferring to a more convenient location would be detrimental to my education.
It’s completely up to you and your man. I would advise discussing the situation at length, and sharing your feelings on it. But, personally, I think it is best to wait, no matter how deeply in love you are and how much you want to marry. Your education is a huge priority in your life right now. You might choose to wait until you’re out of school or even until he’s out of school. That way you can have financial security as well as the security of your love for one another.
Also, if you plan to be married, you have to count in the chance of having a baby! Even if you use NFP, the chances of having a baby are there, especially if you take a risk now and then. It is incredibly difficult to worry about school and a little person who’s completely dependent on you. God would never give you anything you can’t handle, but that’s just something to consider. Seriously consider!
Pray about it, ask the advice of your friends and family, and consider the advice the wonderful people on here are giving – then talk to him. Remember that if it is truly meant to be, that if God has made you for one another and wants you to be together, it will all come together in time.
I pray for you and your awesome boyfriend (I suppose since you said you’re all-but-engaged, it’s sort of like engaged-to-be-engaged, LoL!), that God may strengthen you both, draw you closer together and closer to Him, and guide your lives! God bless you both!

~Marie Seraphina