You just convince yourself to be attracted to girls. Once you start everyone will realize that your interested in females and won't think your homosexual.
You don't. You can choose not to be active, but being Gay is how you are born. It is better to accept yourself and live the best way that you can rather than live a lie. Straight or Gay makes very little difference in how we live our lives. Trying to please someone else or live by their standards is a fools game. You can never win that game. Be who you are supposed to be and don't worry about other peoples opinions.