Before I say what I'm going to say, I'll first man's if clear that I see sex chat sites and can sites (even if you are "just" watching and not paying or interacting) to be a level above big standard prerecorded porn.
I'd be extremely extremely unhappy about my partner using them a d would probably finish the relationship.
On the prerecorded porn front - I accept my partner uses it to a moderate extent and I do too.
Recent threads have made me v award of the ethical issues so I haven't used it much recently, and I've also tried to stick to "solo" male porn.
From watching it myself,I would say that the type of actor, their looks, body type, demeanour ... And the sex acts in porn that I've ranged over- has very little relation to what I'd go for for a relationship of the sex acts I would participate in a relationship (even a casual, sexual relationship). It is purely about visual, sexual stimulation and fantasy and that is fairly one dimensional, whereas life, relationships, people etc are not (unless you're not well adjusted in which case they might be for you). So it's a completely different, very one dimensional realm .. and someone watching a actor/ress with a particular look may mean nothing at all.
Also, being almost entirely sexual; the emphasis is on sex organs and those tend to become exaggerated in fantasy porn because of this (porn, anime, manga, cartoons, paintings like the ones in Pompeii, you babe it) .. the focus is sexual fantasy so sexual parts are exaggerated; which leads to do many (not all) porn actresses having implants or naturally bigger boobs, and equally porn actors having much larger than average dicks.
(Obviously there are exceptions and porn encompasses many body types but mainstream, usually the actresses have big boobs and the actors have big dicks!). So I would in no way assume that someone watching either for sexual stimulation, doesn't/couldn't find someone very attractive, who doesn't have a body like that. They play a role, and that role is fairly one dimensional.. whereas a partner/loved whatever generally does not; you're looking for sexual.attractivenesds alongside lots of other qualities (and the sexual attractiveness could be very varied).
If I were looking for porn as a visual.aid to masturbation I'd look.fid an a for I thought had a good body, relatively attractive,bigger dick and whose "style" i liked depending on my mood. Do you think that's what I'd be looking for in a partner? Of course not. Dick size for example wouldn't matter much at all, and it wouldnt affect me enjoying sex.
Anyway.. I really would t get so upset about a man you're seeing watching prerecorded porn, and with women in it whose body type you do not match.
Of course you could an ethical objection to porn and not want to be with a man who watched it .. but that doesn't sound like your main issue with it.
On the cam, chat etc site thing - too.far fir me personally .. I'd probably not want to stay with them. At the very least they'd have to agree it was over the line and never go on anything like that again and I'd have to believe/trust them in that.