Yeah I'd tell them!
There's nothing wrong with the being a virgin, in theory it shows you've got self respect as you're not going round having sex with everyone.
Losing your virginity is not a competition and you should wait until the right time!
I think you'll regret it otherwise.
I've not lost mine yet but I'm waiting for the right time as I want it to be special for us both (even if she isn't one).