Can your “number” harm your chances of tying the knot? New research indicates that having multiple sex partners negatively affects marriage rates. But the new findings, published in Social Science Research, indicate that this effect is only temporary. In other words, a person’s short-term pattern of sexual activity is associated with their odds of marriage, but their overall number of lifetime partners is unrelated to their chances of getting hitched. The institution of marriage has been in decline in the United States for some time now. According to the Pew Research Center, roughly four-in-te…