Should I Just Be Happy For My Best Friend Although I Think Shes Making A Bad Decision?

In cases like this, it's not much you could do. Continue to still look out for her because she is very young and I'm still young. It's just part of a young person's nature. You could still be there for her. Don't keep harassing her about it because that would cause a problem and you don't want to break up your friendship with her behind a guy. If she gets heartbroken, then so be it. Don't rub it in her face that you told her so, just still comfort her and be a good friend. She seems naive, but that's part of being young. Don't hang around her too much. You can still see her but try not to overdo it, since she's seeing somebody. That's your opinion towards the guy. She can't get mad at you because you're not picking up a good signal on the guy. But still stand by her side if she needs you. Watch for signs of the other guy. If something doesn't seem right, you could warn her, but it's up to her to want to break loose. So, what you're doing is right. If she asks you a question or is open to any suggestions, then you could talk, but don't make it seem like you're telling her what to do because that'll irritate her. Good job sticking by her side.

There really much you can do. If she thinks you are being a bad friend then just drop the subject before she gets mad at you. But in the end if she does get hurt by this guy don't tell her i told you so that will only make is worse just be there for her that way shell know that she will always have you there to lean towards.

I think , if you think that your friend is making a mistake , its your duty to warn her . Tell her how you feel , and why , and if she still doesn't change her mind after that , the only thing you can do is respect her decision support her and b there for her , at least that way she won't be alone . And u never know maybe it doesn't turn out to be such a bad decision after all , either way your friend will know you were there for her and that's all that matters .