When a guy offers to teach you?

So after not talking in a long time (around 2 months) I decided to message him. We talked, and I kind of ranted at him at how I find this subject hard and he offered to teach me. We don't study in the same school but he's coming over to teach. Could this mean he's at least a bit interested?

Short background

He's studying in a different country for the meantime but he comes home once in a while during his break. We don't talk often, almost like every 2 months. He did tell me he likes me a year ago, before he left but I just don't understand why he won't initiate conversations? I always have to message him first though he tries to continue it.

When a guy offers to teach you?
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