I recommend figuring out why he does this before deciding what to do about it. Some possibilities
1) he thinks he needs to yak but cant figure out something else to yak about because all he and his buddies talk about is hot women and sex. AKA he is inexperienced talking to women.
2) he is oblivious to how you might feel about him talking about hot girls
3) he wants you to know that you have competition if you want him
4) he is passive aggressive
5) he is trying to sell himself as desirable, proven by the " fact" that he is surrounded by hot women
I am sure there are many other possibilities.
EDIT: a big part of the art of relationships is knowing what to ignore and what to not ignore. This would certainly go into the not ignore column.