In OP's case though, the money's spent on a serious help, and accepting help won't come easy I guess.

That ticket back to America means you don't have to overstay and get banned from entering the country again in the future. However it turns out, your life will be going through a lot of changes, and it has to be for the better. Maybe you can cherish the time you still have with your friends over there, say thanks and get yourself ready to move on. In a way, I guess you could pay back for the help offered right now through your interaction with them, It was for the trip back home, not a guilt trip, I don't know your BF personally, but I'm pretty sure of that.

G'luck for your life moving forward.

(I haven't read your recent posts, I'll get to them when I have the time, take care.)