I've been with my girlfriend since January. We have a good relationship, normal and as openly and honestly as you'd expect at this stage. However, when it comes to past sex she goes funny. We all remember our favorite city to visit, restaurant to eat at, movie/music to watch/listen to, yet she 'can't really remember' or has no memory of the best sex she's had, who was her best partner, big guys/small guys, kinks, real love, flings, one night stands etc. This says to me that either – I'm a super stud and best everything in every way (this is a joke, I'm not delusional), she has a past she'd rather forget, or she's keeping something from me? Maybe one time she had three guys at once and doesn't want to tell me how much she loved it? I wouldn't be overly shocked at any of the above.
Has anyone been in a similar situation on either side of the relationship and if so, why go down this route?