Oral sex will not break your hymen, so, from a vaginal point of view, you have not experienced penal penetration. It's a pretty big stretch to contend you are a virgin though. Anyone who has engaged in activity that is intimate enough to include oral sex would not be considered a virgin in any moral code I know of. You have been involved in intimate relations with a male, I don't know what looking for some kind of verbal loop hole gets you. I hope you don't intend to use the (giggle, giggle, technicality) that you are a virgin in future relationships. That would be deceptive and you know it.