What the game shows is 2 people caught between the love they feel for each other and being in a difficult spot in their relationship because of outside forces that they can either overcome or succumb to. If they didn't love each other and knew it, then they'd split, easy as that. The fact they don't and what they say in the game shows that they do love each other and that's what makes it so difficult to know what to do because as much as they don't want to lose each other, they also don't want to be in this stressful situation where they can't relax and be open with each other because of Patrick.
If the breakup does happen, it won't be for lack of love, it will be because one or both simply can't deal with the difficulties anymore.
Not saying no break up happens, just saying that I believe you're wrong on your perception of their relationship and that it isn't backed up by what the game is actually showing us. It clearly shows the girls are conflicted when off path and you don't feel that way if there's no love anymore, you feel that because there is and it makes it difficult to know what to do; either stick with your love and hope things can get better, or jump ship, hurt yourself and them, and hope that there's a better prospect out there. That's where they're both at right now, and that's the truth.