last night one of my best friends went out with a friend she wouldn't name (she kept dodging the question). She also wouldn't tell me anything about what she was doing, and kept trying to change the topic. I was concerned about her all night, so am I being too nosy by asking any of that? I want to make sure she's staying safe but I also don't want to pry where I don't belong.

You may have been, depending on how long and hard you pressed her for answers. But if you're worried about her, it was understandable. Are the two of you adults, or still teenagers? If you're the former, you'll just have to trust her to take care of herself, but tell her that you're worried about her. If you're the latter, you may want to mention something to her guardian if she continues to ignore the question even after you've expressed your concern, if you genuinely feel she could be in trouble.

Before anything, just tell her that you're concerned, and ask if this person she's seeing is a safe person to be around. Don't press too hard, there's a reason she's not telling you.

Yeah, I was afraid of being too pushy. I'm 19 and she's 18, but I think you're right about the fact that I should trust her. I was concerned because it's not like her to be so secretive (I've known her since she was 14, and we share A LOT with each other), so I thought something was up. Thanks for your input.