For starters, I'm 17 and have [CF](https://www.cff.org/What-is-CF/About-Cystic-Fibrosis/), so I get sick easily. My mom broke up with her BF of 2 years a month ago, and got back with him last week. BF hasn't been very good with respecting my CF and relationship with my mom. He wants mom to himself, and thinks that since I'm extremely healthy for having CF, that he doesn't need to get vaccinated or wash his hands often. He's also promised to take me fishing and stuff like that, but hasn't done any of that, and instead makes up excuses to not do those things. 

&amp;#x200B;

When mom and BF broke up, I was happy, but my mom got really sad. My mom did recognize that my time with her is very important, and so is my health, and promised to prioritize me. However, she got too sad, and got her BF back without telling me. I found out when I came home after spending some time with my dad. I was pissed, and am still just as mad. BF still disregards my health and time with my mom. My mom said that if BF got sick again, he'd get a hotel until he got better. 

&amp;#x200B;

This last week, he got a really bad cold, and didn't leave. I did my best to avoid him and sanitize everything, but I still got sick because we eat from the same fridge. I haven't said a word to BF. The only communication I've given BF have been death glares and the occasional "back off" if he's gotten too close, especially since he's been sick. My mom thinks I'm over-reacting and just need to get over it, and be glad that she's spending time with me, but now that I'm sick in bed with a really nasty cough and stuffy nose, I can't help but be pissed. BF has done other things in the past that have further pissed me off, but I'll have to edit that in as to not exceed the 3,000 word count. 

Am I the asshole, or am I justified. 