Everything is peachy keen between you and your boyfriend, except when the subject of his ex comes up. Maybe you're being paranoid, but you swear, your BF's ex is up to no good. Something about that girl sends off alarms every time she gets near your guy. You can't really control the way she's behaving, but it's up to your BF to make sure he's being crystal clear about his intentions. Check these signs to see if she has a hidden agenda and see if they're really just friends.

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