Isn't it nice to know there are nice guys in the world who make an effort to care about someone in need? He sounds like a good guy who stepped up to help you during your difficulties on the youth trip.
But I think you should be grateful for his help without expecting him to continue his kindness now the youth trip is over. Don't confuse kindness with romantic interest. I think the guy was just being kind. Good on him.
Now it is time for you to get yourself together and move on with your life on a daily basis. If that guy doesn't have a role in your daily life, you shouldn't have any expectations. Just be pleased he helped you when you needed it. But don't think that being 'needy' in a general sense is going to attract his attention. That's not what builds a romance.