I need to vent

I'm currently in a long term relationship and i'm not happy anymore.. We have had multiple ups and downs and i just don't think I can do it anymore. He no longer puts a smile on my face and in all honesty I feel i'm out growing him. I'm so saddened by the fact i need to leave him for my own sake. It is just so hard bc i love him, and i've been with him for awhile now. Whoever is reading thank you for reading, i really just needed to vent...