My friend always ignores me when I give them any relationship advice.
why do you give them relationship advice?
I don't really believe that they're happy with their spouse and they should break up.
I understand you care for your friend but you should not give them relationship advice unless asked. It's a matter between your friend and their partner and really none of your business.
Haha, I like giving relationship advice since I'm good at it.
I wonder if your friend thinks that you are good at giving relationship advice. You said that they always ignore you. I'd be careful If I were you, you might find out that you no longer have a friend if you keep butting into their relationship.