Boyfriends talks about other women being good looking to me. Why do guys do that.?

He talks about his female co-worker being good looking (not that he notices he says) but that others have pointed it out to him (Sure I am thinking to myself). Or a girl that use to live downstairs from his former apartment that was divorced and had 3 kids and was a tramp, that she was good looking and again not that he noticed or anything like that. Or a comment about a cute young waitress that was serving us and going uh, huh, hm mm as she walked away. Celebrities on tv--she is pretty or has a good figure and that she will do in pinch. He saw a picture of my sister-in-law saying she has a nice looking face. Stuff like that. It happens often. He blurted out once, I love women and then re-tracked what he said. It all seems so adolescent and immature. Do your boyfriends say this stuff to you. How does that make you feel.