Does my fiance deserve another chance...I am on the brink of suicide?

This a really tough situation to be in. On the one hand, this is the only relationship you have ever had so you have little to compare it with. On the other hand, your instincts are telling you that something is very wrong or you wouldn't be writing on Yahoo Answers! I have to say, that the moment I read that you were 14 when he started going out with you, the alarm bells were ringing. 21 year old men who are secure and happy in themselves, do not date 14 year old girls. That is not what most people would term an 'equal' relationship. There appears to be a tendency for him to want to dominate, dictate and generally control/manipulate his world around him - and that includes you. Speaking from experience, men like him are reasonably okay until you become permanently entangled, eg. married or have a child with them. Then they start to think they can treat you even more badly than before. The second time the alarm bells went off for me was when I read about the porn incident. This is not natural or pleasant. A lot of men make excuses for their behaviour by saying 'all men do it' but to be frank, its usually very immature men or very inadequate men who indulge in porn. They grow out of it when they realise its rubbish and getting it on for real is better than sitting by yourself watching other people! Anyway, the fact that he watched it without consulting you first is such crass behaviour I am suprised you lasted this long with him. Anyway, tough as it may be, its my belief that you should have a few more years of life experience before settling down and I think you already know that this guy is not the one for you. It might take a little while longer before you get the courage up to go it alone - but when you do, have a wonderful time. Life is way to short to be dragged under by someone who can't manage by themselves. Good luck to you no matter what you choose to do.