Sometimes my partner will say they want or expect a thank you. This usually occurs shortly after they do something (that does warrant gratitude). I do want to say thank you, and am waiting for the right moment (usually later). It can feel forced, I have done this, so you should thank me now. This results me appearing to be ungrateful soulless monster, and after they beg for a thank you, it never feels sincere and as a result I end up feeling like a soulless monster.