Arguments from silence are not valid. Jesus didn't mention bestiality; is bestiality then okay? Jesus didn't mention kidnapping; is kidnapping now okay?
Jesus upheld the Law of Moses ("I came not to abolish the Law, but to fulfill it ... not one jot or tittle shall pass away until all is fulfilled ....").
In addition, the Apostle Paul is a writer of Scripture, and he definitely mentioned homosexuality. If you believe the entire New Testament is the Word of God, then homosexuality definitely got condemned in it (yes, gays have a way of explaining all that away too).
Thanks for the reply. I like the law of Moses approach.