Both verbs should be in subjunctive?

Both verbs should be in subjunctive?
 

¡Hola a todos!

I have a sentence:
Lo que más importante es que nunca nos aburramos cuando estamos juntos.
Is it grammaticly correct? Or should I put estar also in subjunctive form - cuando estemos juntos?

¡Gracias anticipadas!

Hola, DaBu:

En presente de indicativo, la persona está relatando un hecho: nunca nos aburrimos cuando estamos juntos.

En cambio, en presente de subjuntivo, la persona está expresando su deseo de que ocurra tal suceso: ojalá nunca nos aburramos cuando estemos juntos.

En este caso, solamente suena bien con ambos verbos en el mismo modo.

Un saludo.

I don't exactly disagree with Julvenzor, but I think there is a nuance in meaning:

If you and I are meeting often and we both will keep this habit in the future, then I find the indicative "estamos" better.

If there is no regularity about the occasions when we meet, then the subjunctive "estemos" is better, as thinking of a probability in the future.

Gracias Julvenzor y AngelicaDeAlquezar por sus respuestas.
Dear AngelicaDeAlquezar, you are saying about the difference in meaning, it's very interesting, but should I leave both verbs in presente de indicativo in case of "habit" and in presente de subjuntivo in case of "probability"?

If you say "lo importante es que..." your next verb is always subjunctive, so "que no nos aburramos" is the only possible conjugation. The second verb is the one I find acceptable as a "meaning changer".

-Lo importante es que nunca nos aburramos cuando estemos juntos. -> There is a probability in the present and in the future that we spend time together and we want to have fun.

- Lo importante es que nunca nos aburramos cuando estamos juntos. -> We are having fun already anytime we meet, and we'll continue to do so.