Even if vs Even though

Even though introduces a fact : For example - I look out of the window and it's raining. That's a fact. So I'd say : I'm going for a walk even though it's raining.

Even if, on the other hand, introduces a hypothesis or non-factual event. I look out of the window and see a lot of dark clouds. I say : I'm going for a walk later this afternoon even if it's raining. This time, the rain is not a fact, just a predicted possibility.

So : Even if I go to the party, he will refuse to talk to me is fine. But the same sentence with Even though ... is incorrect. It would only work if you turn it into a factual event :

Even though I went to the party and apologised, he still refused to speak to me.

Hope that's clear.

Yes, very clear...thank you! 🙂