I am glad CliveStaplesLewis raised the topic of David and Jonathan. This great story is, like so many things, subject to skeptical interpretation, so let me add additional perspectives.

There are so many things that are unquestionably good and even godly that the bible doesn't give any unequivocal support to. This "via negativa" or "if it's good, i should see it somewhere" approach doesn't get you very far in your search for biblical support.

The bible doesn't support the emancipation of slaves; quite the opposite, it tells slaves to obey their masters.

It doesn't support democracy; au contraire, it says kings are appointed by God.

And, interestingly, much like the Islamic scriptures, it appears to condemn and vilify dogs throughout, ending with a statement that puts dogs first on the list of entities that will not get into heaven.

So yes, if we're living in an absolute monarchy with slaves doing the housework and the only dogs outside licking blood off the streets (a function mentioned numerous times in the bible), we also will not have any loving gay relationships.

I think love is more powerful than this strange technical qualm or superstition or whatever it is about gay sex; the reason is because love has God's backing. A prohibition against gay sex per se, a "god's plan" that not only contradicts indwelling sexual orientation but also interrupts peoples' true love and prescribes them falsity -- this would be senseless. And yes, I know, "my ways are not your ways," as God said, but then again, God also said that all the scriptures boiled down to love. And in most other cases, it's clear that love is the goal of the scriptures; there really just seems to be this one case that causes agony because it destroys love and offers an infinitely frustrating will-of-the-wisp, a never-seen neo-heterosexuality that merely MUST exist theoretically but actually doesn't, as a substitute. While all the REAL heterosexuals get to have a regular, natural, workable, vivid, vital and simple sexuality. Beyond bizarre.

An unexplained prescription that literally kicks love in the testicles is just extremely hard to take, especially when the only evidence for it is some statements that seem to mean something else, plus a missing picture.

In any event, as John Boswell pointed out, early Christianity supplied the missing picture in the persons of same-sex partner saints Sergius and Bacchus (qv in Wikipedia).