Do you guys think this is sketchy and that she’s possibly just using him?

My brother started dealing with a co worker of his. They have only been dealing with one another for a month. She was new to the job. In a month he has left the mother of his child to be with this woman. He has moved out of his baby mom’s house to move in with her and to top it off this woman has three daughters. I think she’s using him to have him help with her growing girls. Their father isn’t in the picture. He doesn’t see it but I think this is gonna go bad.

Do you guys think this is sketchy and that she’s possibly just using him?
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