Confusing ex fiancee of 5 years

I came on here to as total strangers for some advice, because I know you will give me a straight answer rather than spare my feelings. So this is what is going on: I have been dating this guy since sophomore year of high school. We were engaged, we were in love. Well so I thought. So December 2014 was our 5 year. We recently broke up... and the reason he gave me was because he just turned 21. I am 20 and I don't like to drink or party. But I told him he can go, and when I turn 21 I'd go with him as well. Well its been a week since we've broken up and he has searched my Facebook profile many times (4 times five days ago, 3 four days ago, and two times today). I need some advice on weather I should talk to him or if we are over for good, or even if i should talk to him to set things straight?... I need some help...

If you were engaged to his guy for 5 years though most definitely have the right I push him for the real reason why he broke up with you, you deserve to know what's going on really. I would personally be a little sceptical of an engagement that began when you were 15 but it has been known to work out once in a blue moon. It could well be that between the ages of 16 and 21 this guy has changed a lot, because we all do when we're in our teens and 20s, even if we don't see it at the time. Ask him in a nonjudgemental way and you may just find you get the honest answer. Good luck.

Argh. Sorry for the terrible mess that first sentence became with autocorrect. It should say 5 years YOU most definitely have the right TO push