Hiking is a great way to get some exercise with your honey, all while enjoying the gorgeous views of autumn leaves. It's a great form of exercise since you're working your muscles and breathing heavy. Plus, if the trail is steep, you get to use your arms as well, so it works your upper body too.
If you don't live in an area that gets brilliant foliage, then you and your honey should try to go leaf peeping —photographing and viewing the fall foliage— somewhere else. Check out this list of the Top 100 Trails in North America. The list shows trails in just about every state, which means you're sure to find one near you (or near where you'll be visiting).
Be sure to pack extra layers since it can get chilly and windy towards the summit. Wear hiking boots that protect your ankles, and have sturdy soles since the ground can get really slippery in the fall. Of course don't forget snacks, water, and a camera too, since the views are spectacular once you reach the top.
Fit's Tips: Does trekking it back downhill hurt your knees? Check out these great tips for protecting your knees while hiking downhill.