So I'm afraid you've got a listening lesson from me instead. Please help me with this

[Ferdie Formanes]

Hello again,
This week Caroline should be sending you a listening exercise. However, she has had a lot of dental surgery done and she has been in a great deal of pain and unable to talk very well for the last few days.
So I'm afraid you've got a listening lesson from me instead. - What I'm afraid really means here in this sentence. Please help. Thanks...

[OddThomas]

One of my dictionaries says that afraid is an adjective that means filled with...
fear
feelings of aversion
feelings of unwillingness
regret
concernIn your clause, I'm afraid means I am filled with regret that. It seems a bit strong, doesn't it? I don't think your friend is truly so sad. Sometimes when we say I'm afraid, we mean it lightheartedly.

If I say, I'm afraid I have bad news for you, I am being serious. If I say, I'm afraid you got the highest marks on the exam this time, I am being humorous. I think your friend was being humorous, too.