The peeing didn't start when she moved in. It started when he got a UTI. It will go away when the UTI goes away. That part of the problem will be solved.
The timeline may suggest something different, which is why I mentioned submissive urination earlier.
They've been there for a couple of months. She says it started when the dog was afraid during the storm, and happened the second time, two weeks later, in the company of BF.
I moved in a couple of months ago w/ the bf and my dog recently started peeing in the house, which he never does. The first time was during a big storm and the next time, maybe two weeks later, BF had just taken him out and he peed on the floor after coming back in. I took him (the dog, not the bf ha ha) to the vet and he has a UTI.
I know when my dog had a UTI, she peed in the house a couple of times in one day, not two weeks apart.
I don't know if a culture was done to confirm the presence of bacteria in the bladder (which would support a definite diagnosis of UTI) or whether the vet treated the dog prophylactically for a presumed UTI, given the urination in the house. (Maybe the OP can tell us which it was.)
At any rate, once a UTI is treated, the problem *should* be solved if it was caused by a UTI. However, the OP suggests that it wasn't, by her use of the word
still; I could be wrong and she could just be saying that he still thinks, meaning he was never convinced it was a UTI...
BF still thinks dog it is just the dog misbehaving and that he just doesn't like it there.
It sounds to me like the dog may have developed some fears in his new home.
OP, if the BF really wishes to try to help the situation, ask him if he could not act angry (and all that entails) in front of the dog and see if that helps the issue.