ok so here come my view ... from a Virgo who has dated many Virgo men , ,,,,
If he say's the feelings are mutual you have to take that as he feels the same as you ! but also know that they are VERY VERY reserved about sharing how they feel until they are 100% sure...
this could take some time , ,,,
We are perfectionists , and want to make sure its right so we don't hurt you ... and more important
I would bet money on the fact he has been very hurt by someone at least once,,, and is very afraid of experiencing this pain again,,,,
We may seem cool and reserved BUT we FEEL things very deeply , ,,
Virgo is all about wanting to be loved and accepted for who we are , and about doing whats RIGHT in the situation , if he feels too much pressure about it at all he will disappear to he has time to think in quiet ,,
WE HATE pressure , and dont like to be pushed into anything .....
I hope this helps, : )