It doesnt really matter if u have no experience in love... even for a clueless person that was searching about unrequited love in a library... what he said should be really obvious even if he isnt sure of his own feelings.
Forceful denseness can get really annoying.
Ah yes, the magical sudden courage and impulse gained from having a fever and/or cold will always speed up the romance by at least 30% no matter the type of romance shoujo.