Negative thoughts made a reality...

One of my male friends decided to tell me that he overheard a lot of guys legitimately talking about how ugly and chubby I am. He didn’t have any malicious intent or anything so I’m not mad at him. I am upset though because I deal with so much insecurity and now I feel like everything I’ve been thinking has been confirmed. I’m not desperately trying to be attractive to guys, but like any other teenager I want to be. What do you guys think? Should i lose weight?