The sentiments in this thread are interesting. On the one hand, you do want to be self-sufficient and not rely on the woman for your happiness. When she leaves, your whole life will be in shambles.
But at the same time, if she leaves you and you're just like "eh, whatever", it seems to me as though you had one foot out the door the whole time and were never truly invested in the relationship.
Everything has a risk to it. In the words of Shark, "Life is a risk, Love is a risk." But the greatest gamble is to not gamble at all.
There needs to be a balance though. If a woman you loved leaves you in an LTR, I would think it odd if you were not hurt. Let yourself feel the hurt and the pain, but know when you gotta move on. Ever read the Count of Monte Cristo? Even Edmond Dantes found someone he loved again (just read that book, was so good >_>)