It is possible that the head of his penis tore some of the skin of your hymen. You might also already have a hymen that is torn, if you have been using tampons. (Per the previous poster, notice that using tampons and breaking your hymen tissue does not count as no longer being a virgin.) We don't live in medieval times where a young woman will be killed or no longer marriageable if she is not a virgin, please don't stress yourself over the fine-tuning of the definition. You can still count yourself a virgin or not.
ps -- But if you do want to stay a virgin, don't let yourself "get into the middle of something" where a penis is near your vagina. Your concerns about whether your virginity was lost with proper timing will seem to you to be small potatoes if you suddenly get faced with a pregnancy dilemma.
If you look up the definition to virgin its a person that has never had sexual intercourse. It doesnt say anything about your cherry being popped. So if you feel like you had intercourse then no you are not a virgin anymore,