We already have a DD, aged 3, and have just had our 20-week scan and discovered DC2 is a boy. It took me quite some time to persuade DH to have another child (like about 2 years!), and obviously while he knew the chances were 50/50, he was very open about wanting another girl. I guess he's the opposite to many men, who really want boys because that's what they know and they feel more comfortable that way, but DH is really not a boys' boy - hates sport, is into cooking, arts, etc, (yes I know I'm gender stereotyping but you know what I mean
) has far more female friends than male, etc.
I did always know that he felt funny about the idea of having a boy, but I also know him extremely well and am about 95% sure that when he actually sees the baby and holds him, looks after him, and so on, that he will fall in love with him and that after a while the preference will be a distant memory. He is very, very hands-on with DD and I expect he will be the same with DS, because that's just the sort of person (father) he is. But the other 5% is really worried, particularly since I was the one who pushed for DC2 (he is an only child and would have been happy with one) - though I should stress that I didn't force his hand, and that he did willingly agree to try for DC2.
I guess it would just be nice to hear from anyone who's had a similar experience, and what the outcome was. It seems far more common for men to be disappointed at the news they're having a girl - though maybe the dilemma is the same in the end, since it's about loving a baby regardless of their gender. Did your DH come round? Is there anything you/they did that helped them to come to terms with their feelings?