i've had similiar experiances with relations and friends.it was unwanted attention when i was 4-9. but then i initiated a situation a couple of times when i was about9-12. the shame is horrible even though the person was about my age. but i guess kids do stuff and if their abused they may be more inclined to try it to another. i hope you will talk to your t. it does no good to walk around with such shame and guilt. hang in there