I think that Hebrews Scripture is about having faith in God's word and His promises... and I don't think that He promises that if gay guys get married that it will make them straight. :(

I think Jesus' words on counting the cost of a work before you begin it are very relevant (Luke 14:28-32). I know the context is about leaving all to follow Jesus, but the principle is the same. Why start something you can't finish?

I started something ... my marriage... which I was not equipped to build. Now 20 odd years later I find myself unable to finish.... and that all that I have built has been corrupted by my dishonesty.

I think heterosexual marriage is the only outlet for a sexual partner for a Christian. So if you must have a partner then I would encourage marriage... but!...
If you are not attracted to women, then I think you should tell that to your potential mate and be very honest about it. If the two of you still want to give it a try then you at least do it with your eyes open.
My wife knew I was a BL, she didn't know that I wasn't attracted to her.
Neither of us new that I wouldn't be able to get sex happening unless I fantasied about boys. We actually have only just figured that out, because its only recently that I've tried to stop doing that.

Overall I wouldn't encourage a BL to marry unless they were sexually attracted to their spouse and felt confident that they could enjoy the sexual side of the relationship. Otherwise its just going to be too difficult for everyone.

Blessings
Cat.