Perhaps it was the split from Amphitrite that had made him vulnerable. Especially to Eros' wily behavior. He'd gone from a depressed and grumpy sea king to having that darkness in his heart free up for a little hope. Poseidon did not look for love, and the one woman who held his heart had destroyed it. That bitch had destroyed it.
He had been thrown under Eros' arrows before, reluctantly falling into a hot mess. He eyed Bruises with strange curiosity when he found her at his door. He knew the confliction he had inside but what about her?