Cavaradossi is right.
Also, let me quote The Canons of the Holy and Altogether August Apostles:
*Canon LI.
If any bishop, presbyter, or deacon, or any one of the sacerdotal list, abstains from marriage, or flesh, or wine, not by way of religious restraint, but as abhorring them, forgetting that God made all things very good, and that he made man male and female, and blaspheming the work of creation, let him be corrected, or else be deposed, and cast out of the Church. In like manner a layman.
*
You, a Catholic, may not believe me, an Eastern Orthodox bishop, but I am telling you it is our holy tradition (which you Catholics tend to suppress in favour of authority, while we may do the very opposite, both of which are a tad wrong) that absolute continece in married deacons, priests and bishops was never the norm in the church. On contrary, continuing in the work of creation as man and woman between deacons, priests and bishops and their wives was the norm. You can pull up any number of authors, and the fact will not change. Such is our holy tradition.
Just accept it and praise God for his wisdom. Marital sex is a lot more than a carnal relationship between a man and a woman. It is a sacred renewal of the Holy Mystery (sacrament) of marriage and the realization thereof. It is just as pure as me baptizing a baby. Each Mystery (sacrament) is Holy Spirit himself, descending into this world. Holy Spirit is in perfect harmony with the Father and the Son. There is simply no way any Mystery be in disharmony with any other Mystery. I am pretty sure your Thomas of Aquinn wrote something along these lines.
Oh, by the way, it is absolutely valid if a deacon or priest marries even after ordination into priesthood. There are precedents for that, and a council ruling.
Prayer for wisdom and love,
+Gavrilo