Trust your feelings
Sometimes we turn to our friends for advice. We think they will be there for us when they are not. Then we have strangers tell us that the guy we like is just being friendly.
Guys give mixed signals but it is also important to trust your feelings. If a guy is showing intrest and you feel that he likes you then maybe he really does like you. Go with your feeling and trust the people closest to you.
If you tell everyone they will give their opinion. If you tell people who have had negative relationships then they will talk you out of it. No one can predict the future. Your gut feeling is always right and if you listen to these people you will just end up being unhappy so go with your feeling.