u/ThatGirlRemRem

This happens very rarely but it’s happened twice like 4 months apart or smth like that.
But my dog walked very weird, he jumped on my bed and was walking as if he front left paw didn’t work, he was holding it up as if he couldn’t use it, and I checked it because maybe he had something stuck but nothing, I kept trying to help him walk but he kept falling on his side, I started to panic and took him downstairs to trim his nails because maybe that was the reason, they were starting to get really long so maybe it hurt him, but once I put him down on the floor he started walking like normal, I was so confused why on my bed he was so weird and then once I took him out of my room he was fine, again this has only happened twice and they weren’t even close instances, is this normal? What could it be? How can I maybe make sure it doesn’t happen again? Please and thank you guys 🥲❤️

So for context, I dated my ex for almost 3 years, and basically one year later I find out my friend is dating her, I was going to try and talk to him but one night I check his accounts and im blocked on everything...
3 days later after l've been crying for all of them, he finally texts me on twitter, and says "chud" i basically drop an entire paragraph about how I felt betrayed and he told me that we can talk tomorrow. he knew that me and her ended on bad terms and he even told me "I knew this would happen" after I confronted him, we talked together in a gas station for like 3 hours and we talked a lot about how I felt uncomfortable, betrayed and lied to because he dated her without telling me, and when he knew we ended things bad, but he still accepted her confession. We talked for hours and it was all in the heat of the moment so I can't really remember what we said, but I ended it with "if you had to pick, me or her, who would you pick" and he said nothing, I told him he can think about it because that's smth hard to drop on someone, but am I an asshole or a bad friend for even asking this? I care and love him, he's one of my best friends, and I want to see him happy, but I just don't feel comfortable in this situation: ( also at the gas station he was apologizing profusely about how he shouldn't have done that, and how it's his fault and that I shouldn't blame myself, he just couldn't answer the question, which is fair in my opinion, so please, I would love an honest response, am I a bad friend for asking this?