Based on your replies, it seems he either hates you or is a narcissist. If you’ve brought it his attention, tried grabbing his hand, seen him not act this way with other people, ignores you while you talk and seemingly does this on purpose, he doesn’t care. It is a power grab to put you down very common in narcissistic people. You should consider how your life would be without him love, you deserve better 🤍
He’s a fast walker. There are many conclusions that can be drawn from the interplay of social behaviors but it’s almost impossible to say anything conclusive from just one. It’s actually hard to remember to change something as ingrained and habitual as walking and requires conscious and physical effort. It’s difficult to slow down just like it’s difficult to speed up, you are capable of walking at the speed he does but don’t for the same reason.