Brother in law slapped my derrière

[Debbie7612]

First time, I ignored it. Second time, yesterday, I walked past and he’s sat on the couch, said hi, leaned forward and done it again.

I’m very confused. We are quite friendly and he’s a nice boy but I told him off. Am I being unreasonable? Wtf is he about does he not know boundaries or what?

Is he Donald Trump? It's not cool at all.

Did he look embarrassed? I've nearly done this by accident to people. I also regularly call random family members 'my love' and blow kisses at my SIL (who is very similar to her brother in all fairness' entirely by accident. I think that I may spend too much time with my DH.