Heterosexual attractions are *normal* and *natural* for men. Further, it is *normal* and *natural* for men to find teenage girls (16-17) attractive. In more primitive societies girls are still married at very young ages. There are good reasons to do this if you live in a primitive culture where childbirth is dangerous and life expectancies are short (i.e. 99% of human history.)
However, that was then, this is now. No matter how much some men would like to fool around with 16-17 year olds, those girls are still *jailbait.* Even so, the fundamental attraction is NOT abnormal - it just needs to be deferred a year or two and hopefully the attraction is directed toward the right outcome - marriage.
This does NOT mean that homosexual and heterosexual attractions to teenagers are in any way morally equivalent, or that in either case they should be acted upon. But the heterosexual attraction is a built-in, natural part of perpetuating the race, while the other is fundamentally disordered.
This doesn't mean I think gays should be persecuted, beat up, etc. Nor does it necessarily mean that gay sex acts should be illegal for those over 18. But the homosexual attraction is not, and never will be morally equivalent to the heterosexual one.