Just as a late addition of opinion to the boyfriend comment.... I would not see it as territorial... but as an expression of HIS mental comfort level. As an example, my bf likes that I shave down there, but he has told me he does NOT like a woman who goes hairless... because it does look immature and very girlish to him. In the same breath, he also says, "it's your body, but if you want to know what it does for me, I find women who go hairless more of a turn off than a turn on."
So... I see the fact that he found a nice way to tell you as an honest expression of how he feels. I think it is very cool he felt he could be honest with you and say something... (and I'm going to guess that it is a strong enough feeling for him risking bringing it up, kwis?) BUT. It is obviously YOUR choice.
Now... if he then starts dropping his preferences on how you dress, how you wear your hair, how you do your nails, etc., etc., then I'd see that as a red flag.
