Only does oral when porn is on?

I am very curious as to what you all think, ask your husbands too if necessary. My husband and I started watching porn together a few months ago. That's fine, it's whatever, I'd rather do it together than it be hidden from me. There is only one thing that truly bothers me though. I've been going down on him for years without a problem. He started doing it regularly for me recently, but he only does it when we watch porn. Even on nights when it's just us, he gets turned on enough to want to go down on me, but he will turn on porn to do so. I've tried googling this situation but I can't find results. He is a bit of a Germaphobe, he actually started to really enjoy sex with me more after 2 years of being together. We've been together for 6 years now. I don't think I look hideous down there. I mean I'm not perfect, I am an Hispanic tanned woman and we usually are darker in those areas. When we watch porn, he picks videos of small breasted women and women who aren't dark down there. I'm not going to lie, I do feel insecure, but it's only because of that one thing. Anyways do you think hes a little turned off with how it looks? Or could it be another reason. I know he says it's motivation. I feel stupid posting this on here because it's a little embarrassing for me. With all that being said, the good news is licking isn't my favorite but it does help get me wet and turned on. I could never finish while he does it though because I feel uncomfortable.