Unfortunately most times they have to learn for themselves but if you feel the need do so politely and have evidence of scenarios to back your theory up to explain to them.
tell her your being a good friend and if shes as close as you guys tell everyone..."Girl you stank go take a shower!" -jk, but a joke might lighten it all if shes like a funny-ish person
Best thing to do is tell them to stop and to tell your girlfriend what her friend is doing. But if you want to do the bad thing: Start sabotaging her friends relationship or get the friend one and start annoting her about it. -Get that person out of your life!
Just tell her. Explain simpley that your not happy doing it
if you set your best friend on a date and you like the person shes dating i'd say dont feelbad for ruining their relationship. but it depends on what you feel like doing. if you wantto rech the relationship in a bad manner, then feel bad. if you do it to help yourself then,dont feel bad.
It's not bad, it just causes minor turbulance between friends and their relationship.
It all depends on what type of relationship your friend has with the 18-year-old guy. How does she feel about him and how does he feel about her ? I think your friend should tell the guy the truth about her age. If he already knows her, he should be able to see past her age and see her personality, etc..
Be her friend and get close with her scince shes new
The best way to tell your friend's mom about the party is to simply be honest about it. Once the mom knows the details, she can make an informed decision.
Tell your friend your sorry and dump the boy because boys aren't worth loosing a friend. Make sure your friend agrees though incase shes over him! But you really like this guy and you don't really like your friend.
If you like him then go on ahead and start on the path to a great relationship. If you dont like him then tell him straight up b4 something bad happens and you lose a great friendship/friend.
You can't except by allowing them the opportunity to be so.
Im guessing you mean a bad relationship situation? So if she was just in a relationship shes probably just really emotional and if she is really emotionally all her feelings are all jumbled and she cant think straight because all shes thinking about right now is that situation just comfort her until shes over it