10 Ways to Tell if Someone is Cheating on You

Starts dressing better

If she's gone from baggy tees, yoga capris and flip-flops — to which you've become accustomed over the years — to sexier tops, figure-hugging dresses and shoes cobbled by an actual designer, it might be that she's trying to catch the eye of someone who isn't used to her lounge-around-the-house outfits.