Valentine's Day is coming up. A lot of us usually end up getting guilted in to celebrating what seems to be a greeting card holiday that makes us spend money on steak and lobster dinners and a box of heart shaped chocolates. But, it turns out that acts of giving actually make us happier. In fact, giving causes oxytocin to be released in the brain. That is the drug that makes sexy times more enjoyable. Do you need another reason to get your valentine a gift this year?