Tired of talking about sex πŸ˜’πŸ˜’ Please help.

I'm usually a very sexual and horny person, but lately this is all my boyfriend wants to discuss. Like, where is the normal conversations? Why does it all have to be sexual? I'm honestly annoyed as hell. I'll be trying to talk about something else when all of a sudden here comes sex again πŸ™„ It gets old quick. I'm in an LDR, but it's like 80% of the relationship is just on this one topic while 20% of it is normal things. I used to love masturbating with each other and for my guy, but now it just seems like a work out for me. I'm hardly in the mood now. Maybe only a few times these days. And when I'm not, or if I have trouble trying to cum, he gets mad at me about it and says I don't want to do it, I'm not in the mood, I'm getting tired of it, etc. Butthurt about it. I don't know if it's getting worn out or what, but I'm just tired of thinking about it. I want a break. Tonight he showed me a bunch of porn pictures, and I was completely uninterested. I had the hopes of talking about what he'd been doing, etc, but no. After he got done showing me, I just said I was tired and goodnight. I know tomorrow he'll probably say something about my behavior, but I really don't care. I'm just getting sick of it. I don't think this is how a normal relationship is. It doesn't revolve around sex. Help or any advice please?Β 
UPDATE: I think he's ignoring me because I acted like I was not interested in the porn pictures at all and that I said I was tired and wanted to go to bed. He's getting online on our messaging app every time I send a message but won't read them. He got the pictures off the internet for me to masturbate to with him. He kept asking me last night to say things about them like I'd suck that guy's cock, etc. He had a toooon of pictures. I was thinking Oh my God. I said things yeah, but I was annoyed because I wanted to talk about different subjects. I was not in the mood last night at all. If he is ignoring me, how immature. And I'm sure a fight will probably break out because of the stupid pictures. I'm just getting tired of talking sex all the time. I already know he's going to take offense to it and say shit like I'm tired of being together, I don't want to do it anymore, he doesn't turn me on. Ugh. Help.