Just wait until it's complete. You never know what will happen. Long manga like this with dragged plots are big risks. It could end up like Nana or Itazura Na Kiss (thankfully the authors husband helped make the anime feel complete and give closure) and never finish.
I read about the bunch of fillers and got discouraged from reading, especially when it doesn't it look like much progress has been made. I don't meant just romantically speaking but glancing through the later chapters it looks like the same sort of drama just keeps repeating itself. I will wait it out for a while before picking it up.
@Anonymous Nana was totally worth it though. Sure it may be forever unfinished but still I read and bought all existing manga :)

Watched the anime. Came here because the ending sucked. Read the comments. Not gonna do that to myself. Thanks y'all I won't waste my time reading this turtle