I am in complete shock that your PARTNER of all people would do that to you. This is beyond unacceptable behavior for any relationship - it’s completely irrelevant how long you have been together or how old you are - you are not children and if he truly cared about you, your blockages would be a nonissue. If they are an issue, there is a door and he can walk through it without mocking you. I went on a date recently where I stumbled getting a word out and he made a joke. I snapped back about having stammer and he was mortified, very apologetic, and clearly felt horrible. I knew him for all of 15 minutes and showed more kindness to me than your partner does to you. I strong suggest that you take a long, hard look at your relationship and figure out if this is someone you want to continue having in your life. His inability to apologize to someone he presumably cares about is enough, IMO. I’d have kicked him to the curb without a second thought.