I don't consider dating a Puerto Rican as dating "outside of the race."
Puerto Ricans are like roaches...they've been around black folks for a long, long, time. They are like brothers and sisters from another mother.
If you and the Puerto Rican have kids, your kids are still going to look like black children. Puerto Ricans are just not far removed from black folks.
Regardless of such, good luck with your relationship.