Maybe when this guy meets the RIGHT girl, he wont have commitment issues. Dating isn’t easy, and even with his issues, he is still trying. When dating, every single experience there is a lesson to learn from. That is between the two people who were dating- the guy and the girl. Let her search for whatever lesson she can learn, whether it is in herself, or more outside the box. Let him to the same. Hashem is the true shadchan, He knows what he is doing. Shteiger, there is no need to get so worked up over it. You are protecting your friend, which is understandable, but it is out of your control.
I read a story from Reb Shlomo Carlebach over Shabbos that relates to this in a way. I don’t remember all the details, but I will do my best. There was a chosid who was a successful lumberjack that had a son who reached the age to get married but there was one problem. Every time he was introduced to a new girl, He fainted. They brought in all the best doctors to treat him, but no one was successful. He went to the Baal Shem Tov, and he said,”Dont worry, when he meets the right one, he will not faint.”
One year, the chosid cut down more trees than usual and was getting ready for a large income that year. One night there was a storm that was so bad, the river overflowed and it carried away all of his lumber. He had no money left. He went to the Baal Shem Tov again, and the Baal Shem Tov told him that he can not help him and he will have to become a beggar. The chosid begged for help, but the Baal Shem Tov gave him the same answer.
The chosid started to travel all over Poland to raise money, and whatever time he had free he would stop in a beis medrash to learn. One day, he was learning in the bais medrash and a wealthy man who’s house he visited that day came over to him. The man told him that he is so successful and busy that he cant learn as much Torah as he would like and made the chosid an offer to learn in his house all day for money and when the chosid wants to go back home, he could.
In the end of the story, the business owner became successful because he woke up one morning with lumber all over his yard(that was washed away from the chosids house by the storm.) He started his business with that wood. The family had a daughter that fainted every time she met a suitable match. When the two children met, they didnt faint. It was bashert.
My point is, maybe when this boy meets the right one, he wont have any hesitation, because he will feel that it is just right. Your friend is lucky she didn’t continue, because obviously it isnt meant to be, and now she doesnt have to waste any more time with it and can continue on her own search. They should both find their zivugim soon with clarity!