I think you have a pair.
If you can, post here again in 2-3 weeks. That should be enough time to see if they truly are 1 male, and 1 female.
These young-ins can be tricky sometimes.
I would put them In your incubator.
You always have the chance to get 2 more seramas.
Then you can also start getting more eggs to put in the incubator since it's already going.
That's what I would do.