How do I feel less attracted to someone?

It's an older family member, and I hate myself for these feelings, but I can't help noticing that she's hot. She's happily married and I love that family entirely, but every time we meet at a family gathering, I get these disgusting emotions and I hate myself for it. I know it's a predicament, but is there a way to feel less attracted to someone without absolutely hating them? I still love her as a family member and wouldn't want to ever lose that. I just want the horny ideas out of my head. I know it's a difficult situation, but I just don't know what to do. Serious responses only on this one please. Thanks in advance.