Why do people mistake your loyalty and care for despair?

I mean when I'm in a relationship I always call and check on my partner, I also don't mess around with other girls just because I'm loyal and I care... and I think when you do that some people including your partner think you're desperate or something? But in fact, I can be a playboy or fkboy and get a new girl everyday if I wanted to, but that's not who I'm or what I wanna be. So what's your take on this?
Why do people mistake your loyalty and care for despair?
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