Is it normal to be straight, but do some things for favors?
I'm straight, I pretty much only experience attraction to women, but I'm generally considered attractive, and I do things for some of my gay male friends on their birthdays, since I'm sort of meh towards sex with men. I'm not disgusted by sex with men, I just sort of feel a "meh" towards them, while I'm usually willing to instigate with women. Plenty of people do things for other people on birthdays or holidays, I just happen to suck gay men's cocks as a favor on their birthdays.