Why would a man help his competition have more success with pretty girls when pretty girls are a finite resource?

That said, here are some brief answers...

>>> But could they accept the fact that I have a little place in my heart which they can't seem to reach?

I think so. You could not reach that little place in her heart for children she births, or her dad...and any past loves/marriages - so what?? Love is not bounded by the size of a heart. There is plenty for everyone.

>>> I think it would be a real sore spot for a woman you otherwise really loved.

A woman expects to be a priority to a man, and rightfully so. I think she cares less what (or who) is number 3, 4, or further down on his priority list. She expects to be Number 1 if they're married; at least top 3 if they're not (but intimate).

>>> Maybe not for some, though?

Apparently not, since many pedophiles are happily married to adult women.

>>> Why would it be fine for some women?

Because some women are wiser than their sisters?
Stupid women seek a man/husband who will return their love; they want men who will love them as strongly and deeply as they they love their men. Wise women don't seek a man who will love them; they seek one who will understand and respect her love for him. Men still call this love for her, but it's not the same.

Maybe others will reply and disagree with the answers I give. I've never been married, so what do I know?

PS I still need instructions on how to add my sigpic, please. :)