Whats wrong with my guy?

ok, he doesnt love at all since he cant get over his ex...but i love him to death n i told him all the time about it. when i figured out it was impossible for me to wait for his love i tried going away from him. dated a nice guy back in summer..he fell in love with me, but somehow i couldnt make the relationship work. now i am back to my old guy. he still doesnt love me..last week he mentioned to me how he misses his ex when he becomes sad. i didnt get jealous. instead i sympathized with him. last night i mentioned to him that "sometimes" i miss the moments i shared with the summer guy. oh god, after that he went quiet. n today he has started avoiding me. was my statement wrong? why is he doing like this? he doesnt even love me!