I missed so much by not watching it for 2 years.. Has Ridge got a kid to Brooke or something??

Yep, RJ is his name. I think that stands for Ridge Jnr. We've been seeing more of him lately so I think we're being reminded that he actually exists so they can bring him into the storyline in the future. Give it a year to 18 months and we might be seeing him as a teenager.