I’m 17 and a virgin She’s 15 and not a virgin

She’s very into me and after I spoke to her for a day has invited me round to hers to have sex.

I’m a virgin and don’t want to be for much longer however obviously there is a 2 year age gap but I do look very young for my age (people say I look 15) however here in the UK it is technically illegal but it’s very rare people get prosecuted for it, but am I being stupid taking the risk and is it creepy?