<human>: Before I start, I should explain that I come from a family and a culture where cheek kissing is very normal between family members and friends of both sexes. It's as normal and as expected as shaking hands or saying hello. 

My partner has seen me around family and close friends many times greeting each other in this way. Most often at things like birthday parties and barbecues. Basically what I'm trying to get across is that this is a very normal, accepted practice for me with no connotations other than "welcome! It's nice to see you!' 

But recently, my partner got very angry about it. A mutual male friend (who is also from the same culture as me) he greeted BOTH of us with a kiss on the cheek, and now, a week later my partner has brought it up and said it should not be allowed. My relationship with this man is no different than it is with other male friends. We don't see each other without my partner present, he is married, and I am certainly not attracted to him in any way. 

I understand that people have different boundaries when it comes to what's okay in relationships physically, but it isn't like he or his family or completely unaffectionate. They cheek kissing too (albeit not as often, just at things like Christmas or weddings) and I would have no issue with him kissing a female friend on the cheek or a female friend kissing him.

For many things, I wouldn't mind giving something up if it didn't sit well with a partner, but as I've said- this is part of my culture. Not greeting someone else in this way is almost like not acknowledging them. So I am at a loss to know what to do! 

How would you deal with this?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: my partner has taken issue with a male friend kissing my cheek. Cheek kissing is a common part of our shared culture and I don't know what I should do in regard to my partner not liking it.