It matters how old he is. Guys from around 14 to about 35 have one thing in mind, SEX SEX and yes more SEX. He may come to you about his girl problems because he looks at you as a friend, but flirt with you because he may think of you as someone to fall back on and potentially have a sexual relationship with. It's going to be hard to hear but this guy isn't into you you like he may be leading on he is with all the flirting. The best thing for you to do is consider him a friend, and no matter what he says keep it that way.
its ok its happened before you arent the only one
If he acts different around you for a couple of days. If you have problems ask his friend
Talk to her about it. If she doesn't want to talk, it's best to break up before she breaks your heart.
If they are your best friend it is best to actually talk with them concerning feelings. They will treat you different, may be more flirtatious, touchy or try to be around you as often as they can. If you are friends even though there may not be existing feelings on one part you should be able to get by this and carry on. If you find you both do have feelings get to know one another in this other way and take things from there.
Having a friend is important, because you can talk about your problems
yes, Google is our friend because it help us with our problems
you dont, this could cause problems between you and your friend
tell your friend no back off
Answer Find a good friend to confide in and let your girlfriend do her thing.
It is important to have a smart friend because they can help with work they can help you in problems and they can help you in life problems. (Steal his work)
It all depends on what kind of problems she is having
Your friend shouldn't be out at midnight in the first place. Tell your friend they have all day and the early evening to contact you and not to come around so late. Good communication skills resolve a lot of problems.
ask her. be honest.