<human>: Can you summarize the given text in a few sentences?

I'm M23, she is F22.  At this age I feel embarrassed that I have only recently lost my virginity... I graduated college summer of 2011 and since then have worked as a Software Developer and risen through my career to the point now where I'm making quite a handsome salary for my age.  Needless to say I'm somewhat of a nerd, I'm healthy, active and fairly confident in my looks, I've just always been a hard-core introvert and never had a proclivity for socializing or attaining a romantic partner.

Six months ago this amazing girl just sort of fell in my lap, it was almost a lottery chance that we even met and everything just fell into place... She asked me out and from there we've both never looked back.  About a week into dating (3rd or 4th date) we had sex (virginity was lost at that time) and have been doing it about 4-5 times a week since then.  When the topic came up I told her I lost it in high school but that I've rarely had sex since then, like only a dozen times before our relationship.  She seems to match the situation but the difference is, I'm quite sure she's being honest and I'm not... simply out of shame and embarrassment over my old age to lose it.

So my question is, should I come out to her and tell her I never had sex before her?  What do you think your reaction would be if you were in her shoes?
<bot>: Lost my virginity to my girlfriend but told her I had lost it in high school... should I just leave it be since it's so trivial or should I tell her?