All I can say to you is this, and please don't take it as a discouragement NOT to find a Catholic, that is certainly the ideal.
However, I have seen many couple marry Catholics, and at times, one or both will fall away, into apostasy. Not talking about these couples going to another Catholic group, talking about them just giving up on religion period, or becoming other man made religions. We live in very evil times. Devil pulling us in all directions.
One time while I was crying to God, while at Mass, about my family, and how I so wanted them within the Church. I heard a voice within myself, saying, "see all these people here today, in the end it will be so as well, but with different people, for many will slip away, and my grace will be given to others." I am already seeing this happen, families leaving, but each week I see new families coming. Really strange!
Which is why I suggested that you pray that God will find you the spouse that HE wants for you, don't be surprised if he is might not be Catholic, but God knows that some day he will be.