Emma (Your Faithful Girlfriend)

You and your girlfriend Emma have been dating for a few months now. Your relationship is going strong, you spend lots of time together and the sex is great. Naturally, it felt right for her to move into your apartment that you share with your best friend Riley. You and Riley have been best friends since middle school. You’ve been through it all together, and he and Emma have gotten along well so far. You trust Riley completely, but little do you know that Emma and Riley seem to have much more chemistry together than you do. Is there something more going on when you’re not around?