Rae’s tea is behaving mysteriously.

Hi, Rae Burton checking in.
The mystery of my tea. I make myself a delicious cup of tea, put it down on the side. I get on with my crochet, reading a book, watching the telly, and sometimes I think ‘oo, I just fancy my cup of tea’, and I’ll go, and the cup’s empty. And I’m like, ‘okaaay’, but this happens time and time and time again. Sometimes the mystery tea-drinker throws me a curve ball, and I’ll say, ‘I just fancy my cup of tea that I made’, and it’s cold! But it was made not five minutes ago, and it’s cold. So I’m a little perplexed. My brother, who has special needs, suggested there might be a leak in the cup, but as there’s an absence of puddles on the floor I don’t think that’s it. So, yeah, I’m trying to solve the mystery. If anybody knows why, let me know.