It’s very likely that your cheating lover is giving gifts to their secret lover. After all, gift giving is a huge part of dating. Look out for signs that someone has been buying gifts. For example, receipts for gift items that you haven’t received. Also, if you start to see retail store mailings coming to your home and you know you don’t shop at those stores, that might be proof as well. For example, if you start to see Victoria’s Secret catalogs arriving at the house, yet you don’t own a single Victoria’s Secret item, perhaps someone else is wearing the goods!