If you are out in public with your partner and you always catch them looking at an attractive member of the opposite sex would it bother you?
Answer: It depends. There is a fine line between taking a quick look at someone of the opposite sex, which is natural, and blatantly staring at someone with little regard for how you feel, which is obvious disrespect. Everyone has an occasional wandering eye which is more often for some, but it is very easy to tell when the line has been crossed. So it would not bother me if my partner occasionally looked at someone of the opposite sex, but if I felt like there was little regard for me being there, then that is a problem that we would have to deal with.
Also, don’t make the mistake of trying to outdo your partner by checking out more people. This simply will not work and will cause more problems and will not solve any, but is often a mistake that is made.