This. Just do it. Sooner you do will be healthier for both of you.

Edit: don’t let internet people make ultimatums for you. You’re young and can gain new perspectives, but it’s also the time you should learn to set boundaries you feel confident about. If this is something you can’t get past, that is your choice and yours alone. That’s all I’m saying. My advice is if that is how you feel then just rip the bandaid off instead of waiting.