Whenever you start to discuss feelings of getting married with him or the institution of marriage comes along in the discussion somehow, then does he get agitated or start to change the topic or through some sort of tantrum or temper? These are tell tale signs of a boyfriend who is right now, not even ready to discuss starting married life with you or perhaps has never thought like that. He may be enjoying the phase of relationship that you both are having right now and could very well have been looking for exactly this only right from the outset. The warning bells are ringing loud and clear, if these are the sort of things that you are facing when thinking about discussing the ultimate long term test of a boyfriend girlfriend relationship i.e. marriage. Remember, all the rest that comes in between is only getting you prepared for this institution of marriage. You are not investing your previous months and years, just to be thrown out of the wagon when the time comes to share the burdens of life as well.