Breaking up with someone you still like can be challenging, but honesty and compassion are key. Choose a private, comfortable setting to have an open conversation about your feelings, explaining why you believe a breakup is necessary. Emphasize that your decision isn’t a reflection of her worth but rather a need for personal growth or different paths. Be prepared for her reaction and offer support while respecting her feelings and space afterward.
if he is really into that girl then back off but still be strong friends. if that girl and him break up then after he recovers ask him out
try any book by Sarah Dessen.
Because they still like the girl they are dating, but are bored. Or because they suck and they are a player.
Yes, but it is an open door to let's hook up again, or your new girl friend or boy friend doesn't really like me.
Staring would be on sign the she might like you but there is other things like texting you a ton or asking your friends to spy on you.
be nice
it depends if you like her do not break up with her if you don't leave her
Say "You should break up with that girl she secretly doesn't like you at all and is going to break up with you later on".
You should wait till they break up.
You're not dating so you don't have to break up.
there is nothing you can do except if you still care about her try to make it work
move on