how to get the homepage login form HTTPS / SSL

Screen shot: http://ScrnSht.com/wwrwsw

How do I get that login form (BuddyPress login form) to be HTTPS / SSL instead of this code:
<form name="login-form" id="sidebar-login-form" class="standard-form" action="http://example.com/wp-login.php" method="post">
?

Thank you.