Me and my boyfriend have been dating for 2 1/2 years. We live miles apart because of college and only get to see each other on weekends and I'm tired of the same routine. We both love each other very much and want to be together forever. I am about to graduate and he has another year. So why can't he propose? Doesn't it usually takes that long for a good engagement to last? Is it normal to have wedding and engagement plans always on my mind? How can I convince to him that this is special and not crazy?

Think of it this way, what's one romantic moment compared to years of regret if the marriage doesn't work out?
So, you're crazy. Stop trying.
If you want one go and buy a cubic zircona.
You two haven't really spent a lot of time together. It's not as if you're in your 50's so I don't see why you need to rush into marriage - especially while he's still studying.
Chill out - it's a long way from the church to the grave.