I’d just take my chances with the bullet
With regards to Melania, I don’t think she has any positive feelings towards him at all. I think she’s a paid member of staff, and their son was the result of IVF. She clearly lives a very nice lifestyle, but appears to be completely separate from Trump.
From seeing her at various public appearances during his presidency, I’d say she’s actually repulsed by him, but is contractually obliged to be with him when he needs her to be. I imagine if she left, or failed to comply, her and her family would be in quite a mess.
Boris, on the other hand, seems to actually attract partners/mistresses/flings!