Someday even the moon will again collide with Earth.
Not unless some other large force, currently not present upon the scene, acts upon the Moon or the Earth or both, and barring that;
not according to the information in the link that I took the trouble of supplying for you.
There are many other sources which say much the same.
At the moment, measurements have shown the Moon to be receding, getting farther away, 3.8 centimeters a year, or something close to that, if memory serves...
The theory is, that it's been doing so, for a very long time, and will continue. The link I supplied, tells why and how this is so, in a fairly straightforward fashion.
The Moon is slowly slipping away from us, and we are also spinning slower, just a tiny fraction of second, each and every year. This, according to science, observed measurements, and investigations that have found reasonable explanation as to why this occurs, etc...
By the time the Earth becomes gravitationally locked with the Moon, no longer spinning on it's axis, then the Sun is calculated to have exhausted it's fuel supply by then, and the Earth and Moon would be much, much farther apart, too. At that point I suppose the orbits would be stable, at least momentarily, after which THEN orbital decay might set in? I don't rightly know, but according to calculations, it would only occur in the darkest & longest of dark nights!