No, I am not giving this game a one-star review because of all the sharing and swinging, nor because pretty much every girl in this game ranges from having at least one ex-boyfriend to being an utter whore. I'm more open-minded than that; keep reading.
I'm giving this game a one-star review because in terms of plot, humor, and even basic stuff like logical progression between sequential frames, it is an utter mess.
Also, I hate being the "why the hell have y'all rated this game so highly" guy, but for this game, I will be that guy with no hesitation. How this game doesn't have an average rating of 2 stars, is beyond me.
Where do I even begin. Let's begin with the humor of this game. 20 minutes into playing MtPB, you will be served with two fart jokes, which, right off the bat, as far as I'm concerned, are two fart jokes too many. The second one is especially egregious, as MC lets a nasty one rip while he's talking with a potential LI, and instead of the poor girl leaving immediately while calling him an asshole and cutting all ties with him, she continues to entertain his company. Try that in real life and see what happens. You could be the best looking dude and it still wouldn't save you.
Just as another example of the dev having no idea how real people would react to his jokes, there is another girl, that MC calls a cunt. Well, "leprecunt", to be precise, because she has green hair, and he thinks he's being hilarious. He does that to her face, multiple times, and instead of the girl slapping the shit out of him or at the very least asking him to cut that shit off, she even ends up wanting to have sex with him. Show me one woman in the real world who will want to have sex with you after you call her a cunt.
That's enough examples of the game's terrible humor; now let's move on to the plot. In the world of MtPB, things just spontaneously happen whenever, wherever, and for however long the dev needs them to happen, without rhyme, reason, or even the basic courtesy of a setup. For example, MC and the girl he farted at go for a beer at a local bar in a spur-of-the-moment decision. Not one minute into them sitting down with their beers, literally from one frame to the next, three of that girl's guy friends just materialize out of nowhere, calling him a "fuck nut" and staring at him with judging eyes. Don't ask how all three just happened to be there; the dev decided he needed them there and then, and so it be. The girl tries to salvage this by suggesting that she and MC move to a booth where it'll be just the two of them, but at this point, the dev decides that MC has somewhere else to be anyway, and so he leaves without even drinking his beer. If MC knew he was on such a tight schedule, why did he even agree to sit down for a beer? Again, don't bother wondering; the dev works in mysterious ways.
If that didn't sound nonsensical and bad enough for you, how about this one: At some point, the girl MC calls a cunt invites him to her dorm room. MC walks up to her door, which, just like every other door in this dorm, needs a keycard to unlock. Here, MC has the option to try his own keycard, which, for some reason (don't ask why, dev saith so), seems to be able to open every door in this dorm. Doing so results in MC catching the girl masturbating, and upon realizing his presence, all she says is "Holy fuck! Don't you knock?" before thanking him for coming. Somehow it doesn't even cross her mind that he just unlocked a door he wasn't supposed to be able to, and that he can invade her privacy any moment he wants.
But I saved the worst for last... because despite everything you just read, what truly does my head in the most when it comes to MtPB is all the moments where the game seems to straight up have a stroke. Again, I will offer two examples. First, here's an excerpt of dialogue between MC and the girl he farted at, and I promise you I did not omit any in-between lines:
MC: We were going to get a coffee, but ended up seeing a movie.
Girl: What did you end up watching?
MC: I managed to get that book from Charlie.
Girl: Shit! She actually sold it to you?
Did you catch that? She asks him about a movie, for some reason he decides to ignore that entirely and change the subject, and she... just rolls with it, as if she expected him to ignore her question.
Here's an even worse example. MC walks out of class. The girl he calls a cunt is waiting for him outside, and calls his name to get his attention. He looks at her, says "What's up" and starts walking towards her. In the very next frame, the girl just poofs out of sight. Keep in mind, this isn't a story where characters have supernatural powers. In that moment, instead of MC questioning his sanity and wondering if he's hallucinating in the middle of the day, he just goes "Where the fuck did she go? Wait, is that (another girl's name)?", as he's already looking at a different girl, at a different direction. And again, in the very next frame, a third girl appears out of nowhere from a third direction, calling MC's name. That's three different girls, (dis)appearing inexplicably from three different directions, in three sequential frames, in a sequence that makes absolutely zero sense. That's enough to give you a whiplash.
In conclusion: MtPB is recommended only if you want to lose brain cells while you're playing it. The plot is bad, the humor will make you physically cringe, and it seems that even the dev doesn't know what they're doing at times. I did consider giving it 2 stars because at least the renders are good, but considering how bad the game is in every other aspect, I decided it doesn't deserve that.
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Edit to add: I couldn't possibly imagine that this game could be any worse than I originally thought... but it is.
So I played MtPB one more time, for one reason only: In my previous playthrough, MC was a manwhore, and one of the LIs (the one he farted at, in fact) saw him at a club being kissed by another girl, and decided to leave the club with another guy, clearly disappointed at MC. I considered her the best LI in the game, and I was pretty bummed out by that outcome, so I decided to play the game from scratch, this time turning down any other girl's advances that I could, and pursue her exclusively. Did you notice how I italicized "that I could" in the previous sentence? Yeah, as it turns out, there are parts of the story where MC will fuck a girl or get a blowjob, and you the player have no say in the matter. What's even worse is that you can't avoid being kissed by the other girl at the club, so the girl I was interested in gets disappointed in you and leaves the club with another guy no matter what you do. I'm not the kind of guy who cries "NTR" where there is none, so trust me when I say that this game features, among other things, unavoidable NTR.