How do you end a 15-year relationship?

No kids involved, and we’re not engaged either. After living together for four years, I’ve started to feel exhausted.

He cheated on me 3x before and I forgave him each time, choosing to continue our relationship. Now that everything seems to be going okay, AS IN, I ironically feel more ready to end things. I suddenly felt tired.

I’m not sure if it’s the length of the relationship that’s making me hesitant to let go.

Or maybe I feel pressured because he’s ready to have a child, and I’m not. 🤷🏽‍♀️ I’m also not afraid of not getting married or having kids in the future.

...I feel like I no longer believe in marriage din because, well, “boys will always be boys.” (I'M SO SORRY TO ALL THE GOOD MEN OUT HERE ALAM KO MERON PA DYAN SA TABI TABI. PERO SORRY DI KO NILALAHAT HAHAHAHA)

That's all, been zoned out for days now and would just like to gather my thoughts here.