Feeling iin his feet and toes is a good sign.
Many times what appears to be "paralysis" is really being caused by swelling in the spinal area and as the swelling goes down, more and more feeling returns.
It is important that he gets physical therapy, regardless of what he can and can't feel because it will keep the muscles from atrophying. In otherwords keep them functioning and moving properly.
Only time will tell how much movement and feeling returns to his body.
The fact that he is young and fit does have a tremendous affect on his recovery, as does his attitude and determination as well.
He needs all the support he can get and so do you. Ask the hospital if there is someone that you can talk with to deal with your fears and keep your spirits up.
He may have a long tough road ahead of him to get back on his feet, but with good medical care and support, you will both get through this.
Good luck and my prayers are with you and your boyfriend.
and Please keep us posted on his progress and on you as well.
Fran