Heterosexuality as an identity became a concept in the nineteenth century. Before that the emphasis was on procreation rather than necessarily labeling individuals based on their sexual orientation. As such the history of heterosexuality is interwoven with the history of sexuality. It's obviously necessary to produce children in order to perpetuate the species but individuals have throughout time been attracted to members of the same sex as well as exclusively to members of the opposite sex and variations on the them between the two extremes.
Traditional societies tended to exhibit heavy social pressure to marry and have children regardless of sexual orientation and this was before the idea of heterosexual esteem or self-respect became so desirable.
According to the American Psychiatric Association (APA) there are numerous theories about the origin of a person's sexual orientation but the most popular one states that "sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors: and that genetic factors play a "significant role" in determining a person's sexuality. Further it has been proven beyond a shadow of a doubt that sexual orientation is not something chosen and cannot be changed.
Behavioral problems typically occur in any situation when individual needs, feeling, proclivities and thoughts are demeaned, negated or ignored. Fear also goes a long way toward promoting behavioral problems among those confused about their sexual orientation.
While our society has decreed that heterosexuality is the best route to follow there's documented evidence that heterosexuality is more an idea that's been contrived than actual fact. Many modern psychologists hold that sexuality in humans encompasses more complex behaviors than originally thought. That perhaps societal decrees of one kind or another as put forth by religious, governmental or other groups with the power and ability to control people's actions have done more to squelch the expression of the possibilities than actual physical limitations. While not necessarily condoning nor degrading feelings and desires that might not fall into the narrow field of socially allowable sexual behaviors it's desirable to be cognizant and recognize that heterosexual self-confidence may be compromised if, whether male or female, an individual doesn't think everything is normal with themselves. It can go further than declaring oneself heterosexual or homosexual if an individual is experiencing feelings or desires that have been deemed as weird, sinful, sick or some other derogatory term but in reality are perfectly normal and as such can't be "thought" away this can lead to behavioral problems and perhaps other issues.
Misunderstandings are perhaps the biggest causal factors of behavioral problems as seen within the realm of sexuality. Attempting to promote the idea of heterosexual esteem may be an offshoot of the desire to see people procreate and perpetuate the species which is all well and good, but while doing that, human beings need to be accepting of other natural urges and make themselves feel less of a person for experiencing them.
If your credo deems it improper to act on these urges well, then by all means it might help decrease the incident of behavioral problems if the understanding that human sexuality isn't capable of being as clearly delineated as some have done in the past might prove helpful.