On several occasions at family gatherings or when I've been round he stares at my breasts or has been googling my body , once we invited husbands parents to stay on holiday for a few days with us, there was an open staircase in the lounge where he was sitting on settee under and I realised suddenly he was staring up my nightie on coming down the stairs, having quickly turned and caught him in doing this. He just pretends he hasn't done it looks away quickly. I've also caught him staring at my sister in law's breasts on occasion. On holiday I told my husband about his behaviour trying to see up nightdress, I was so shocked at his behaviour towards me, my husband never brought it up with him and I didn't at the time , but I feel like my husband makes excuses for his father and never wants to stand up for me on any occasion regarding his parents who are overall quite arrogant and self centred generally, which I've had to put up with to keep the peace over many years. I know I should have said something at the time and feel pretty stupid not having done so, letting him off the hook but also feel really disappointed in and let down by husbands lack of interest and concern. It's really come between us I think . I would appreciate others thoughts on how to deal with this?