This really speaks to me because I too have struggles with singular words/names/titles. I have subtle anxiety because I know there’s no alternative word I can use. If you struggle with your partner’s name David, try using the “avid” hack cuz that works a lot for me. “Yavid” or something will work too, something that has the same mouth movement. Or combine them into one word, “I take youdavid”, which can trick your brain sometimes. Either way, I wish you the best of luck!