男女都可入---

i think you have 面紅和心跳加速 is normal la, because you are the normal guy, if you don't have any feeling, that is un-normal, your girlfriend~she is normal too, of couse, is not any girl will like this, i think she is 興奮 too.

it's just normal, you can touch her mm too, let her know you love her

你係正常~因為你已達到性興奮,如果你冇哩個感覺的話,,證明你沒有正常的性感覺~不是個個女仔都係咁~如果佢係咁既話,你就要好好把握機會~但做既時侯,要注意一d野喇!

是正常的..
不是個個人見到男人勃起時都會這樣...