Well, yes and no.
The concept of 'twue wuv' is fundamentally based on the idea of a nigh-perfect relationship, and in the real world, as we know, most relationships aren't perfect. Sometimes peoples' personalities aren't compatible, sometimes real life issues can drive a couple apart, or maybe it just wasn't meant to be.
However, I think it's safe to say that the only people who really have a good chance at achieving true love in their lifetime are those that really do love their partner, and resolve to stick with them and look past their flaws, no matter how bad things can get at times.
Life rewards people for not giving up, and the prospect of true love is probably the greatest testament to that essential truth. Just don't count on it happening- many people go through life never finding 'true love' no matter what approach they take.