The emotional roller coaster strategy doesn't apply anywhere. It ESPECIALLY sucks for LTRs, unless the chick happens to be a mental wreck, in which case she isn't LTR material anyway.
See, most people's lives are already emotional roller coasters, and most of the time they have more downs than ups. There are different downs for different "stages of life", and most of the time these downs are minor overall, but the point is that the downs are always there. Any mentally healthy person (including a woman) would naturally want to add more UPS to his/her life. A quality, fulfilling relationship is a good way to do that.
Let's face it: most of us know (or at least see) MANY more couples that are HAPPY with each other and have a mostly healthy relationship than couples where the woman is abused but still stays with the man, and these relationships where BOTH partners are happy (*gasp*) often last for a considerable amount of time and can eventually lead to a lasting marriage. This is because their relationship is an UP in a world where we experience many DOWNS, even if they aren't all major downs. It's a source of HAPPINESS and makes them feel GOOD. And you know what? Even though I'll admit that women are kinda ****ed up, you can't say that any mentally and emotionally healthy woman would opt for misery and degredation over happiness.
So yeah, if you *try* to make a relationship into an emotional rollercoaster, you're essentially trying to destroy it. A relationship is a dynamic entity - it will have ups and downs anyway. Rather than trying to influence its natural dynamics because of some misconceived notion about ERs, just try to draw as much pleasure and enjoyment from the relationship as you can, because if you have a quality girl, I can guarantee you she is also trying to get as much GOOD out of the relationship as she can.