Please help

T

My boyfriend of 3 months just ft me and said that he has lost feelings for me. I don’t know what to do, I absolutely adore him! He says that he doesn’t find me attractive anymore, our relationship is too serious/stressful for him and that he thinks I’ve changed. Please help me, what do I do? I asked him if he wanted to break up and he said that he needed time to think about it. I’m so heartbroken!