Marital age is not specified in Bible, God made Jews capture Midianite little girls as wives (Numbers 31:18).
Talmud admits sexuality in Shiksas since the age of three (because זָבָה is possible at that age) and allows child marriages:
Also, Talmud discusses since what age one may consider a homosexual as a “man” to be subjected to the Leviticus 18:22 punishment—since three to nine years.בַּת שָׁלשׁ שָׁנִים וְיוֹם אֶחָד, מִתְקַדֶּשֶׁת בְּבִיאָה