@GliscorMan; The fact is, the vast majority of relationships end, whether it's your first one or your fiftieth one. If you never try, you never learn - which will make you better at the future relationships. But it doesn't make sense to not take a chance on a relationship because of the possibility that it might end. What matters are the good times you had, and how to go forward after it does end.
No one ever wants to break up with anyone, but it happens. You can't worry about what the end of a relationship will be like if it keeps you from starting one. Heartache hurts, but I think most of us would say it's worth it.