Can't mingle with friends. To do now?

Hello..I am studying degree level education.My friends are very weak in studies.I am a rank holder.My frnds fail in exam.the only boy who pass all exam in my class is I am only.My friends keep talking about they fail in exam and they underestimated there selves all the times.I became different among those frnds.I don't like that kind of talks.They keep laughing at thereselves only.Sometimes I hurt them becoz they fail in exam.I try to develop there studying strategy but they won't co operate.they where disinterested.If I study more they laugh at me..I want to enjoy college life but they won't come to class only I am only single boy who attend classes.there are only 17 members in our class.Today I hurted them very badly.directly I said I hate them.and I stopped talking with them.I feel alone and tensed and frustrated.I just want to enjoy a college days without bad habits.they also don't do bad habits.now I am alone badly.I get depression.I have OCD too.what to do now?