It's not a matter of belief. I know many homosexuals (including relatives) and not one has ever expressed the slightest desire to commit sodomy with children. Therefore, it's a fact that not all homosexual men are chickenhawks.
Do homosexuals prefer young men? I guess so. Not being a homo myself, I can't say. I do know this, however: a lot of straight guys don't mind checking out teenage girls. Ever see a 40-year-old straight guy slobbering over a high-school cheerleader? I have. It's nasty.
Homosexual sodomy is a filthy, digusting act, but it's not the same thing as being a pedophile. Yes, sodomy is unnatural and wrong, but so is adultery; are heterosexual adulterers more likely to harbor a sick desire for children than those who remain faithful? I see no evidence of that being true. Likewise, while the homosexuals I know obviously have a disordered sexual attraction to other men, I see no evidence that any of them are attracted to children.
And they would express this desire to you why? Do me a favor, keep them away from the children.