Da hell. Confession is important as it's a sign or respect towards the person.

What if he/she doesn't feel the same to what you feel to him/her and you have already taken the "advantages" of him/her so quickly without even asking for the permission, in here it's the confession" part.

Confession is like asking for his/her permission in my opinion, even worse the other part would be feeling ashamed of what you did and if the person is a mama boy/girl , then everything will turn into worse.

Just my 2 cents.

- Old School Boy