I mentioned
Nodame Cantabile and
Kamisama Hajimemashita in your other thread, but they both meet your request here as well. The male half of the pair in
Nodame is a "tsundere" meaning a character that starts off cold ("tsun") but warms up ("dere") over the course of the story. Usually females play the tsundere role, but Chiaki is an excellent male example.
Neither half of the main couple in
Kamisama Hajimemashita particularly want to fall in the love with the other; she's a high-school girl, and he is a fox spirit. It all works out fine in the end, though.
I also suggest
Saiunkoku Monogatari, but now that it is out-of-print it is not so easy to find. Fansubs are
here.
Tsuritama is an excellent comedy from last summer about four high-school boys, well three boys and an alien, who take up fishing. Now that you're done yawning, it's really quite funny and was among my favorite shows from last year. Not much romance though. I'll also mention
Moyashimon, about a college freshman who can see microbes, for another amusing romp. Crunchy has both seasons, but the first is much better than its successor. This show has more
sexual references than some of the others, but nothing explicit is shown.
Of course, there's always
School Rumble, one of the most consistently funny series ever made. There are a couple of scenes where the male protagonist appears nude for comic effect, and some of the boys have an strong interest in porn (not shown, of course), but beyond that it's largely good clean fun. You can choose to watch this with subs or dubs at
Funimation.