Bridesmaid and groomsmen hooking up

Jaslynn • Married and happy!
So one of my bridesmaids and groomsmen are hooking up. I have no problem with it obviously, however I am getting uncomfortable for my wedding day because of how much PDA they display. I feel like on my wedding day they shouldn't be all over each other kissing and hugging and climbing on each other's laps. I have felt at times I need to change the lineup of groomsmen and bridesmaids so they are not paired together. Am I being silly?