This is a story of two women who have commitment issues. One is scared of a relationship going the distance and the other gets bored after the relationship becomes physical. I hope next time I see a yuri tag its actually yuri, this is shoujo ai at best and that's kinda pushing it.
This is just friendship, I wouldn't call this shoujo ai or yuri. It just so happen that they're comfortable with each other and they both happen to be girls.
Reminds me of some of my friends they had the same thing, both where girls and it didn't worked out in the long run. Now they're both married with children. Skrrr prrrr Brrrr ESKETIT