Is it ok to ask a guy you've been having sex with if he's sexually attracted to you?

I've been having sex with this guy for a year now. We've been friends with benefits but I don't know if he's actually sexually attracted to my body type. I see where he follows models on social media. This is why I'd like to ask him if he is sexually attracted to women with my body type. Or if he is only attracted to models and skinny women.

Even if we are only friends with benefits I still think it's important that both people are sexually attracted to each other because it's physical and we see each other naked. And I don't see anything wrong with a woman wanting to know that a man who sees her naked is sexually attracted to her.

I am going to say this to him...

I'd like to talk to you about something but I don't want you to think I'm trying to start drama or that I'm trying to argue. I want clarity about something. (Are you sexually attracted to women who have my type of body? Or are you only attracted to models and skinny women).

Then I'll tell him I'm asking because I am sexually attracted to him and I enjoy having sex with him and I want the feelings to be mutual.

(He's actually told me he's insecure so I'm wondering if this is the only reason why he's having sex with me. Because he's insecure about himself in bed).