What’s the difference between relationship vs situationship?

So this guy was staying and leaving multiple women, giving them engagement rings, and constantly intentionally being thrown out of the house. Women was giving him money but he didn’t buy anything for them. He kept giving them less than 10 minute sex according to the women. He had women basically taking care of him. One woman spent more than $5,000.00 on him.

nevertheless, he was already secretly married to a woman and never asked any of this from her at all.

now all the women are mad

What’s the difference between relationship vs situationship?
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