Guy's Behavior

HOW TO TELL HIM I DON'T WANNA SEXT ANYMORE?

So there is a guy who I know from mutual friends, and we are both physically very attracted to each other. We never met in person, and he also mentioned he's not looking for a relationship since I know he just got out of a toxic one a couple months ago. Although I told him I was looking to date when we first started talking, I'm now not really either looking for a boyfriend at the moment so I can take care of myself more. I love flirting with him and the fact that we're both kinky and sexually think alike. Although we have been sexting for a while now ( about 3 months), we stopped talking for 2 weeks. Nothing happened... we were both just busy during the holidays. But out of nowhere he messaged me a video of him stroking, (which although is hot to me) kinda made me feel like all he wants from me is just that- to see my tits and ass and the usual sex stuff. Although I usually have no problem with that, since this is between us and I trust him enough to sext... this time felt different. I felt kinda upset he came out of the blue only to get his dick wet. ( I know I don't have to) (also he's a very sweet guy never said anything out of line or made me feel uncomfortable on purpose)
Guys, how to I nicely tell him I don't wanna sext anymore/send anymore without making him feel like I'm not unattracted to him? If I just ignore him next time is that rude?
HOW TO TELL HIM I DON'T WANNA SEXT ANYMORE?
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