The differences between a 21yo male and 22yo female can be worlds apart when it comes to processing thoughts - particularly in terms of relationship issues (being right up there among the "big topics").
Plus, you have the advantage of mentally preparing yourself to express whatever is on your mind, whereas your partner may feel bombarded with potentially confronting questions out of the blue that may backfire if he responds without enough thought.
So, his words of comfort and support are a safe bet in the short term - he's a smart guy!
Perhaps you could 'save up' your immediate concerns and suggest when would be a good time for him to sit down and talk things through - give him a heads up overview to allow his own preparation (research, filter, avoid...) in order to provide a considered and proactive response.
Make this a pleasant experience by ensuring other stressors aren't present or simply reschedule the session.
Sometimes there won't be a solution but comfort can be found in feeling free to communicate it (and to freely identify what can't be provided in return).
As they say, a problem shared is a problem two people have got...
Alternatively, it helps if you have an objective and trustworthy confidante who is on your wavelength whom you can use as a sounding board to express doubts and fears. This can hone things down to the essential problem allowing you to provide a more direct path to receiving support from your partner.
