Will a straight man have gay sex on crack?

I am gay and have bought crack for three different men that claimed to be straight. Crack is the number one best pant remover. All three on separate occasions have smoked crack with me and the minute they get high, off come the pants. The acts they perform are differing and sometimes limited but they all let you perform oral sex on them and obviously enjoy it. Dirty picture taking seems to happen as well. The one common thing that occurs is when they come down they all swear they're not gay and tell you not to tell anyone. They say it only happened because of the drugs.