I experirnced this, but the other way around. I gained weight( I am a female) and men were opening doors for me, wanting to date and used to get asked out in the streets, even women wanted to be friends with me.I was flat ignored for almost 5 years of my life after losing weight. It.was to.the point I thought.I will live the rest of my life on my own and fell deep into depression. I stopped taking care of myself because whats the point? Also, you could be the shittiest person but people will still ignore that, simply cause of your looks. But you cant change the world, so accept it that its how the world works. Its superficial, but enjoy it while it lasts but dont let it get to your head. As for me, I lost tons of weight again and back to being ignored, but its cool.