Is there a connection between homophobia and misogyny? There are good reasons to think so: each position tends to be based upon common assumptions about the superiority of the masculine role and the inferiority of the passive, feminine role in intimate relationships.

DED Space argues:

Men who freak out over men being together in a romantic/sexual relationship freak out because for them, it all comes down to their own fear of being someone's butt-boy. Which would be really humiliating and would turn a man into something truly loathsome--a woman.

The fear of being made "a woman" by another man will send an otherwise shallow and apathetic man into a letter-writing, Focus on the Family-contributing, Republican-voting lunatic. Show me a man who hates gay males and I'll show you a man who despises women.

I wouldn't agree with the last statement. I would instead say "Show me a man who hates gay males and I'll show you a man who despise the role they would assign women." That's probably what DED means, but I think this is more clear because these roles are artificial creations that the men in question assume to be immutable and, usually, handed down by God.

Alas comments on the above:

I’ve seen this hyper-phobia and misogynist attitude displayed by homophobic men. They despise Gay men out of the fear of themselves becoming “the woman” or “the feminine” in a sexual relationship or social setting, and they long for their women to be submissive so they can reaffirm their traditional masculinity and manhood. If they become “the woman” or “the feminine” in a relationship or social setting, they are no longer a man and they loose their “power.”

Traditional masculinity is valued as powerful and dominant, while traditional femininity is associated with weakness and submission. Traditional femininity solely exists to reaffirm the traditional masculinity’s power and dominance. Homophobic men who treasure traditional masculinity (and even hyper-masculinity) view the relationship between Gay men to be unnatural because there is no woman or feminine being to reaffirm the masculinity and manhood–the so called “power” aspect is missing.

Some people really aren't secure unless there are clearly defined gender roles in a relationship. Gay couples, male and female, have often been asked "who gets to be the man and who gets to be the woman" in their relationships. The assumption behind this is clearly the idea that such an intimate relationship requires that one person take on a "man" role and another take on a "woman" role, with both roles being very distinct.

Relationships where this doesn’t occur are denigrated and devalued. When a lesbian acts more "male" or a gay man acts more "female," they are treated as if they were less human. The exact same is true of straight men and women who fail to adopt the correct gender characteristics. The prejudices against non-submissive women and gay men are, then, closely related.

Read More:

• Gay Rights, Gay Marriage
• Evangelical Christianity & Homosexuality
• Catholicism & Homosexuality
• Religious Right