<human>: I have a coworker that I've developed a friendship with over the past 2 months and we go out occasionally. There's no romantic component as we have conflicting gender preferences, so that's not a part of the problem. He's a big fan of making inappropriate comments and jokes and in the interest of not starting a fight with someone I see every day, I've let most of them slide. However, yesterday he made a comment that instantly made me incredibly uncomfortable and I'd like to call off our plans tomorrow and cool our friendship a bit with minimal drama. He's always insecure about the status of our friendship and asks me if I hate him multiple times a day, and since I'm so used to reassuring him, I reassured him as well yesterday after he made the comment.

For reference, the comment he made (in front of another coworker as well) is that every time he sees me he wants to milk me. Hella gross, and I'm super tired of my large chest being a punchline with him and everyone else.

Can you condense the text into three sentences or less?
<bot>: What would you say to someone (likely via text) the day before plans after you've decided to cancel due to them making you uncomfortable?