[jamdls]

I think it's fairly normal to feel the way you do. For most people thinking of their parent having sex at all is pretty creepy. However, it sounds like you need to grow up a little and accept the fact that your father is first of all a MAN, being your DAD should not be his primary focus especially since you are way past child rearing age. Older men like younger women, it's a fact of life whether you like it or not and you never know there may come a time in your life when you are attracted to someone who is much older or much younger than you. I have a 28 yr old daughter and I'm 53 and single, I'm sure if I started dating a man in his 20s or 30s my daughter would not be very happy about it, and possibly disgusted by it; but what I do is my business as what your father does is his business.