It would be easy to just say not to take it personally, but if only it were that simple. The urge for a romantic bond is deeply hard-wired into our brains. For this reason, some people experience rejection not merely as a (sometimes bitter) disappointment, but a very personal attack on their value as a human being. Here are key points to help you respond most constructively to this distressing feeling.
If someone has already indulged their same-sex interest even to a moderate degree, then this is by no means a simple matter. Marriage should not be pursued without professional assistance to figure things out.