Hi all, please help!!

I was wondering if anyone experienced the same or have a solution. My wife and I have a fantastic relationship and we both can regularly bring each other to orgasm. We're both crazy about each other and communicate openly and easily.

The problem is that during vaginal penetration, she really enjoys the first thrust and completely feels all the sensations at the front and back of her vagina, but after that (even though she is really aroused) she completely loses sense of feeling at the front of her vagina (but not the back).

Now, I know that not all women can orgasm from intercourse, but I'm pretty sure that it isn't too much to expect feeling at least the same pleasure at the front during the first thrust throughout intercourse - or at least that's what logic would tell me.

We spice it up a lot. Lots of foreplay, kissing, toys, different positions. Sometimes quick sometimes slow. Oral, play, etc etc. It's definitely not due to a lack of arousal.

Can anyone explain why and how to rectify this? (and no, it's not a small penis issue :-)

Thanks a million :-)