I have been with my girlfriend for 3 years now and lost

Hi,

     If you have any doubt whatsoever, don't go through this engagement.  You have to be really sure about yourself.

NO, NO, if she is acting this way now imagine how she will act after marriage when things don't always go the way we want and there is a lot of stress. Perhaps she doesn't have the gumption to break off and is doing everything possible to make you do it.

It really sounds like you guys are on different pages. Trying calling her and saying everything you said in your question, don't hold anything back. If it's meant to be, you guys will be able to work through your problems and perhaps help the relationship hit a new level.

Good luck to you 

Reading your thoughts here seems like you are feeling uncertainness. Well marriage is not a child's play.You have to understand her feelings as well being away from you for so long. I think if you ever want to get married you need to live back together before you move on. You need to see if it really works without the distance separating you two.