Talk to Psychologist on Obsessive Compulsive Disorder (sexual Thoughts)

Somebody plz help me,my frnd had a obsessive compulsive disorder (sexual thoughts),she's too much depressed due to this get wet dreams at night and according to her he also discharges :-( can't share it with anyone in her home,plz I beg u plz somebody help her to get out of this ik barha maslla wehem Ka b hai,jiski waja se har waqt unhe apna aap na Paak lagta hai...I m worried k wo kch ghalat na karle khudk Saath as she is too much depressed :-( Plz help respected Doctors