My boyfriend enjoys viewing and commenting on model's pages and photos on Facebook. Is this normal?

[Anna]

I've been going out with this guy for 5 months and just recently I noticed he has been liking several model's pages and photos on Facebook, one page in particular titled "Gym Hotties" where buff girls pose semi-nude in bikinis and short shorts. At first I confronted him about it and told him it's disrespectful for him to do that online especially when I can see it on my timeline. It doesn't make me feel insecure it's just bothersome and it looks BAD. He explained the reason why he likes these photos is because they are popular and by liking them several people on his network will be drawn to his page and he will gain more fans for his future car company. At first I bought it, and then I thought it was complete bull shit after noticing that not only was he liking these model's photos. He was also commenting them. He has said things like "Dammmn she looks good!" and (the one that has bothered me the most) "I want to go to the midwest just to try to find a girl like this! That's perfection all around." What in the world does that mean? Should I be worried? And how do I confront him about this? In no way am I trying to be insecure, it just looks really bad especially when I can see this on my timeline every time I go on Facebook. And then again, I don't want to make this whole thing seem like a big deal seeming how Facebook is just a stupid online social network where people are free to be stupid and look stupid as they please. Any sincere advice will be appreciated.