[Ashurato]

Honestly, I think you should solve the problems the two of you are having before you even consider taking the next step. You've only been dating for 6 months and you shouldn't rush into anything. Getting engaged is not going to solve them (and may actually create new ones).

If I were you, I'd reject the Facebook engagement request. It's not too late. Then sit him down and talk about all your issues. If he pitches a fit because you rejected it, then he's definitely NOT ready for marriage.

If you talk about your issues beforehand and not be engaged until he actually HAS a ring, then you may still get your romantic proposal. Because seriously, there's no reason why you can't at least wait until he can afford a ring before getting engaged. BTW, he really should ask your father if he hasn't yet. It may be another problem that's already brewing if your parents are the last to know.