Hi Chris,
Good advice from OG and Cazzz......try to spice up what you felt when you first set eyes on your hubby, and see if you can relight the spark you once had.
Obession is a strange word, and it's probably just an infatuation you have, as feeling a bit low at present, as if to say "Hey, what if.....??"..........you would like someone else OTHER than your husband to pay you some attention.
Avoiding the person may help you, but if you REALLY love your husband, it shouldn't be a problem.
Advice from close friends/family may help too, as much as it may harm, so be careful what advice you take.
I wish you all the very best, and to get that special tummy feeling you once had back when you were younger, and first got together.
35 years is special. isnt it?.......take care x