HELP NEEDED!!

I happen to have a friend.he told me his problem and i understood him.i told him that i would think of the solution but to be honest i cant.ok.this dude had a girl friend for a year.they did all the crazy stuffs together untill he was transfered.they did the long distance thing for a while.they would talk on the phone the whole night.she begun to be so demanding.she wanted him to be close to her and would always be moody whenever he told her that he had a job and that he was employed.she didnt understand his condition.he would go and see her whenever he had a chance.she was in her last year in university.when she cleared,she went back to her home town.so this guy took a december holiday to go and spend it with her.he rented a room in the same town.they would spend the whole day together and she would go back home since she was living with her mother.he never wanted to cause any trouble with the mother b'coz African parents are very protective.so one day this girl told him that tommorow she was going somewhere with the mother and that they'll be back late.he agreed.when he was taking a walk tommorow,he bumped into her younger brother.they knew each other.after chating,he asked her where his sister was.he told him that she had gone with one of their 'distant' cousin.(a man)he sensed something according to how this boy hesitated at first.he agreed and left.she would give excuses about visiting a former school mate and would disappear the whole day.one day this guy saw her getting in a car with another man.he called her phone and she lied saying that she was with the mother and that she was out of town.he went back to the room.then came 31st december.the PARTY as you can call it.she invited him.she was accompanied by her causin(the nurse) whom earlier had pleaded with her to dump him.this guy had lost his wallet the previouse day and was out of cash.he told the girl friend about it and she understood him.when they got to the party venue,the girl went over to her friends.he was left with the nurse who wanted him to buy her some drinks.he bought her two beers.the girl friend came back and disappeared.he stayed alone for a long time untill he became conserned.he went to look for his girl friend.all that time she was just watching him.she was with this distant causin whom he came to know as Paul.when she got back she overeacted when he asked where she was.she went away and never showed up again.on 2nd,he called her to say that he was leaving town to go back to work.to his suprise,a man answered.when he asked where she was,he told him that she was with him.that he was the boyfriend.he demanded that he wanted to speak with her.she told him that it was over and he should forget about her.she changed the phone number.so this guy was heart broken and he doesnt know why she left him.there was no warning at all.ever since that time it has been around 3 years.he has not been the same person.he cant maintain a relationship anymore.he cannot talk on the phone with a girl b'coz it brings back those memories.he doesnt know what he will do to move on.he is conserned about his dating status thats why he is seeking help.he is affected by the way she left him.now this brother needs our help.dont worry he doesnt use this site,so feel free to comment.i cant imagine going through such a thing.