Well, Yaphet and Finn didn't know, so in a way what they did was consensual, But yeah, the alien roofie thing did miss the mark, the episode did have some funny side moments though, I don't think it's intent was insensitivity to victims of rape or their families, but it could have been better thought out for sure.
Yaphet had every reason to "know." She had made her opposition to him clear and to the mark and was at the point of reporting him to HR if he didn't knock it off and, suddenly, she's head-over-heels for him. Yaphet should've known something was up and turned her down and, really, that would've been more dramatically interesting for the character. For him to turn down his "dream" because he knew it wasn't "real" and for him to be the genesis of people figuring out something was going on and then, at the end, Dr. Finn thanks Yaphet for not taking advantage of her and says they may never be a couple but they can maybe be friends or something along those lines.
But, no, he basically rapes her.
That's probably the most "upseting" aspect of this episode for me that that whole scenario wasn't entirely thought through by the show-runners and was very poorly timed for release considering the wave of news coming out right now about sexual misconduct in Hollywood.
When Kelly started gushing about Alien Rob Lowe to Alara I figured there was something going on here beyond romance and suspected it to be something having to do with ARL and something like the Psi 2000 Virus/Polywater Intoxication from TOS/TNG was going around, particularly after Ed started his school-girl gushing and the stuff with the Dr. and Yaphet started. I did like how it ended with a "Maybe..." that Kelly didn't "truly" cheat on Ed and was under influence by these pheromones.
The "solution" to the problem of their mission was a bit too easy and too nicely wrapped up, I don't think we needed to go with a full role-reversal/personality flip with the aliens. (Like the one alien taking a "female role" and saying he didn't want to tell his crew until his parents knew.) Ed's gushing over ARL was borderline but seemed to not be treading too much into "Gay Stereotype" and felt more like the episode of Seinfeld with Kieth Hernandez and Jerry acting "school-girl" over a friendship with him. (Though it Ed's was at 11 since it was clearly more of a "romantic" love than a heroworship thing.)
There was also a touch of "gay panic" in this episode which is sort of counter to what we saw in the episode dealing with Bortus. I know we've not seen much in the episodes that humanity has evolved to "perfection" or Star Trek-like levels of equality or people being accepting of all others but Gordon's reaction to Ed's gushing over ARL seemed a bit on the line. ("Soon he's going to be into *him.* ) But it didn't come out that way too much with Ed reacting to his own behavior in a disgusted way and seemingly accepting it and moving on.
It was an okay episode but I'd say the weakest one yet and we've been on a leveling trend since "Majority Rule" which was an episode I really liked. Hopefully next week we can get back more into the swing of things.
And, man, when the opening notes of My Heart Will Go On started I laughed, just the idea of it...

YOU WILL BE SILENT!