Yes magoria.
It's a basic test of honesty and discipline. I don't trust people who can't be single for a bit.
Even if the DH didn't want to move in immediately, the ex might have been thinking it was on the cards at some point.
Assuming she was in an exclusive relationship, the ex would have been turning down other dates and nice men because the DH didn't have the decency to go "we're both wasting our time here, let's both move on and be single". If she wanted children he took one of her fertility years away.
I've noticed in my broader social circle that with men who won't leave one relationship without another lined up, the new partner struggles later on
Fundamentally, the man thinks women and their lives and schedules are designed to work around the man's needs and whims and feelings.
So even if he isn't taking other women out to coffee, his work schedule or his family are expected to be the centre of his partner's life
She doesn't have any needs of her own because women are inferior creatures who don't have them, and the family unit is designed to revolve around him and his feelings and his desires.
Given that she knows he will move on with no hesitation if her performance is below par, she is on a constant treadmill to make sure his "feelings" don't change.
Woe betide her if he loses those butterflies and stops feeling good (perhaps the partner changes appearance/ages or criticises him) because then another woman will be the one he's looking for to provide them.