Help!

Ok. So I like this boy, my friend told him while we were at camp. He said that he had a girlfriend. A few moths later she asked him if him and his gf were still together and he said it was complicated. That he liked her and she liked him but less and they both were not sure. Than one months later she asked him again and he said yes and no, so he doesn’t know. And idk what to do! I still really really like him. Please if anyone knows what to do please help me!!!