I'm with you, Christina.
Joanna, what your BF asks is just so far beyond what is healthy to ask our loved ones to do that I hope you can get across to him what doing this will cost you. It's stress for you, but maybe not for him. Maybe it's like a teenage thrill ride. Guys are just different in some things, & he doesn't get it that this is a major big deal for you.
If you say no, what will the consequences be of that?