This does not just apply to dating.

If he wanted to decorate his home properly, he already would have.

If he wanted to be in shape, he already would have that underway.

If he wanted to settle down and have a family, he already would have instead of being a bachelor.

If he wanted to dress well, he already would.

If he wanted to learn how to cook, he would have before meeting you.

If he wanted to learn a new skill, he would’ve already put in effort.

If he wanted to be a better lover, he would not have a track record of selfishness.

The way his current life is is a reflection of his priorities.