You need to understand that everyone has their downs. You can't leave someone just because they have bad time, are insecure and don't match with your vision now, you need to help them to get light again. That's what makes YOU a REAL person, if you can see through darkness in someone and remember who they really are. World is hard and love is all you have. You need to fight for them so they can stand up and fight for you and themselves again. Please don't leave someone who loves you and needs you because they will rise again stronger then ever. Be strong and patience for them. Let them rise with you. They are worth it.