Trouble is, while you may not consider him just an internet friend, he still is classed as an internet friend, and with what I've found is that parents can be as stubborn as hell with things like this and won't give in or it will have to undertake a huge amount of persuading for them to give in if they strongly believe something isn't right, and this is the a very normal case with online things and people from online. My advice, give them a bit of insight to who Darien is, and maybe get him to interact with your parents in a way like talking to them on Skype or face to face on skype even, and that may gain their trust to be able to send him what you want.