i reckon that feeling lasts for about 2 weeks.
then it would get annoying
it's the same thing when girls date bisexual men, although because of some of the differences in the way both genders act, it means that usually the men are more guarded about it (and much more likely to cheat behind the girl's back). The same 'supercool' factor is there for a while, plus bisexual and gay men are trendy as hell now, but the novelty wears off
I managed 5 times in 24 hours last weekend, then I collapsed and refused to shag any more until I'd got some sleep. By that stage, you practically have to bend it double to get any kind of penetrative ability