Whether aliens, sex pollen, or horny bad guys made them do it, Joe and Nicky are forced to have sex. It was as consensual as it could possibly be in that situation, but afterwards neither of them can touch each other for a long time because it reminds them too much of being forced.

+for only one of them being affected by the original fuck-or-die, so the other one was clear headed when they had that decision, and both of them dealing with the fallout (a la "I did what I had to and I don't regret saving your life, but I hate that you couldn't say no"/"I'm grateful to be alive and I know it's not your fault, but one way or the other you still took advantage of me")