Are they living together? I'm guessing they're at least not celibate, which actually creates bonding hormones between them, (not to me tion the spiritual aspect of soul-ties) these make it much harder to end things even if one person isn't sure.

It usually also has to do with not knowing what marriage really is, not knowing what one wants out of life, and believing the lie that it's easier to stay with the wrong person than to find the right person. So, a kind of poverty mentality when it comes to finding a good spouse.

Women often say, "all the good ones are already married", but it's usually just because the good single guys don't hang out in their orbits because they're not the most mature and awesome women. 😬