First, two things.
I disagree with your premise. The Bible states over 1,100 times that it is the Word of God - that is, God speaking to man. Combine this with the fact that Jesus is God along with John's gospel which states that Jesus was with God in the beginning. This means that anything God does or says in the Old Testament is also done and said by Jesus. Therefore, there is no supposition in attributing Old Testament or New Testament views on homosexuality to Jesus.
Further, the position that during his earthly ministry Jesus commented on every sin is erroneous and misses His main message and purpose. Jesus came to fulfill the law, not state the law. By fulfilling the law and then dying in our place, he has satisfied God's wrath for the sins of the redeemed. As a result, we are imputed with His righteousness and God's justice and mercy are both perfectly maintained.
Having said all that, contrary to what many claim, Jesus did have something to say about homosexuality during his earthly ministry.
In Matthew 11:23-24, Jesus is commenting on the unbelief in Capernaum. The context of these verses is Jesus comparing two cities: Capernaum and Sodom. He is communicating to Capernaum the utter wickedness of their unbelief and he does this by comparing them to an extreme example - Sodom.
When viewed in the proper context, it is clear in these passages that not only does Jesus not approve of the sins of Sodom (homosexuality), he sees them as sufficiently vile so as to be used for his purposes in condemning Capernaum.
Here are the versus.
Matthew 11
23 And you, Capernaum, will you be exalted to heaven? You will be brought down to Hades. For if the mighty works done in you had been done in Sodom, it would have remained until this day. 24 But I tell you that it will be more tolerable on the day of judgment for the land of Sodom than for you."
You've gone to the scriptures and discovered Jesus had already said something on the subject, albeit inferrentially, but clearly targeted.
That is not the same as sitting down and saying to yourself "Now, let me pretend to be Jesus (God) and come up with something Jesus might say or do concerning the issue."