You can start a thread that is specific to that topic if you like and hopefully others will contribute.
Most ladies are rather reluctant to share their sexual past with their current bo's. I guess they think it may negatively impact their current relationship.
Interestingly, for the ladies with liberal attitudes its a lot easier for them to get sex than it is for guys.
I know for me, I know who my wife's lover was before me but know practically nothing about her sexual experiences prior to that and she was a junior in college when she & I became a pair. Her only comment of her past is that she doesn't have a desire to have sex with guys with super large cocks. When we were swinging some in college & thereafter, I've seen her take a few large cocks, like 8 inchers, and I've always wondered just how large of cock she could accommodate inside her. She said the larger ones make her sore hitting her cervix so hard.
All I know is my 51/2er was good enough to give us 2 wonderful k.ids.