Yoish, I admire your honesty in this struggle. In his new book The Eye of the Storm, the esteemed Rosh Yeshiva, Rabbi Aharon Feldman shlit"a describes your predicament:
"The difficulty with which the homosexual finds himself is enormous: he must struggle against a drive which has no permitted outlet. Temptation follows him in every situation. A religious Jew cannot have a social relationship with a female, but at the same time this homosexual Jew cannot have a social relationship with men without being aroused by them. Thus his life consists of constant struggle against his inclinations. Someone who is able to resist these temptations is a tzaddik of the highest order....... The Torah requires us to avoid things that tempt us to the best of our ability. A heterosexual should not seclude himself with a woman or deliberately arouse his drives in any way. Similarly, a homosexual has the same obligation with respect to his own sex; he must avoid any situation or any company which might arouse his drive."
Now I wonder how the Rosh Yeshiva (who just called you a tzaddik by the way) would advise you to handle this because for you avoiding these situations would mean leaving yeshiva- ironically, the place you are supposed to shteig in avodas-Hashem is the very place you're surrounded day and night by good looking dudes.
All I know is that if I was surrounded all day and night by good looking ladies in their late teens or early twenties... and if I lived in a dorm with them... and if I shared a bathroom and shower area with them.... suffice to say that it would not be a good situation for me, so I can't even imagine what you must go through being immersed in an environment where the object of your desires are ever present, day and night. Don't know how you do it man, but you're amazing for trying. May Hashem give you the siyata dishmaya you need and so richly deserve for your efforts.
Wish I had good eitzos for you, but all I can say is hatzlacha rabba and your courage in fighting this is remarkable.
P.S. I've never understood how anyone can maintain people "choose" to have this same-sex attraction. Why in the world would someone voluntarily choose something that makes him so different, misunderstood and often hated.