How can I tell a man that he needs to stop kissing/biting me so hard ever though that’s what he likes doing ?

How can I tell a man that he needs to stop kissing/biting me so hard ever though that’s what he likes doing ?

Last night he was kissing& biting on my boobs & it hurt so I told him he hurts and he stopped but still continued kissing & this morning I woke up to my boobs being a dark ass purple & my chest too. & he left a hickey on my neck. Surprisingly visible but not that dark. After I told him to not leave me hickeys in my neck every time we meet up, idc on my boobs bc it’s covered & I can hide it. But man I never had my boobs be so purple. My thighs too have purple bite marks. My sisters tell me I look like I’m being abused by how dark it is. I would show a picture but tmi.just imagine dark purple.

How long will they stay for ? I have plans on going to the beach next weekend 🤦🏽‍♀️.

How can I get rid of the one on my neck ? I’m at work all day tmr & today I tried covering it with makeup & it didn’t work lol , my coworkers still saw it & if they did so did the customers 🤦🏽‍♀️. & I can’t let my mom see it, as soon as I got home from work , I put a hoodie on so she can’t see bc I usually wear tank tops.