Is being “easy going” a good thing?

This guy is friends with me and an another girl. Both me and the girl like him but he only likes me. He says the other girl is more demanding and has a bit of a mouth on her. she's too complicated to deal with. He is four years older than me and she’s the same age. He prefers to be with me more because I’m more “easy going” and sweet. I’ve heard when a guy says that it’s because he wants to take advantage of her.

Is being “easy going” a good thing?
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