In my very young days I dated a woman with two children once—hit your numbers 2,4 and 7—and I was gone in a hurry.
The kids were great—I could see I was getting way too attached to them—not so much to the girlfriend.
She still had a soft spot for the ex...
Bye!
(I ghosted her—totally—no arguments—no warning—no good-bye, just gone. Imho it was the right move for everyone.)