I do! This is a "been there done that" moment. Hahaha, my advise is if YOU'RE REALLY NOT HAPPY ANYMORE then why not just end thing relationship?
I mean, eventually that where it gonna leads so why bother waiting?
So don't wait for the inevitable moment just go for it. I mean TALK.
BUT REALLY, if I were you. Be more OPEN and talk to your lover about it. That's the least you can do. Tell 'em that your not happy anymore, tell 'em that this isn't working anymore. Who knows maybe that'll just what you need. Maybe, just maybe. You to can spice things up again.
THE WORST THING that could happen is that you break 'em heart so do the MOST NOBLE thing to do, BE MORE HONEST of what your feeling and TELL your lover. Whether or not your Happy or You don't love 'em anymore. YOU ALEAST OWE IT TO 'EM. SO PLEASE, for f*ck sake do what you think is the right thing to do.
If what you really saying is your JUST NOT HAPPY is maybe because you are Finding more than you need to be. Or maybe your not happy anymore is because you fell out of love with your lover. Well, what do I know. You just a side of the whole story so yeah.
My ENTIRE POINT is that JUST BE HONEST to 'em and to yourself as well. If your not happy because you don't love 'em anymore then let 'em go so they can be happy with someone else rather than keeping the unhealthy relationship that will just ruin the both of you in the long run. So there you have it. Goodluck!